Flight Instructor Glider, Oral Prep
Questions to ask the candidate, with bullet answers and source citations. Companion to FAA-S-8081-8C Practical Test Standards.
Areas of Operation I to XIV + Privileges
How to use
Each Area of Operation and Task mirrors the CFI-G PTS. Under each Task is a question bank a DPE is likely to draw from, with bullet-form model answers and a short source citation.
Source abbreviations
- AIH, Aviation Instructor's Handbook (FAA-H-8083-9)
- GFH, Glider Flying Handbook (FAA-H-8083-13)
- PHAK, Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25)
- WBH, Aircraft Weight and Balance Handbook (FAA-H-8083-1)
- AIM, Aeronautical Information Manual
- 14 CFR §, Federal Aviation Regulations
- 49 CFR 830, NTSB notification rules
- AC, FAA Advisory Circulars
- GFM, Glider Flight Manual
Tags
- G ground evaluation
- F flight evaluation
- G/F either, depending on conditions
I.Fundamentals of Instructing G(waived for add-on; tasks E and F are required)
Ref: FAA-H-8083-9 (Aviation Instructor's Handbook).
Define learning. What are its characteristics?
- A change in behavior as a result of experience
- Purposeful, the result of experience, multifaceted, and an active process
- Not the same as maturation or temporary change due to fatigue or drugs
List the laws of learning and explain why they matter to a flight instructor.
- Readiness, students learn best when ready, willing, and able
- Exercise, repetition strengthens, disuse weakens
- Effect, pleasant experiences reinforce; unpleasant ones inhibit
- Primacy, first impressions stick, teach it right the first time
- Intensity, vivid experiences teach more than routine ones
- Recency, most-recently learned is best remembered
What are the four levels of learning?
- Rote, recall without understanding
- Understanding, grasp the meaning
- Application, apply what's been learned to new situations
- Correlation, relate to other knowledge and use creatively
Name the three domains of learning. Which dominates flight training?
- Cognitive, knowledge (facts, concepts, regs)
- Affective, attitudes, values, judgment, ADM
- Psychomotor, physical skill, control coordination
- Flight training uses all three; psychomotor is most visible but cognitive and affective are what produce a safe pilot
What are the major theories of forgetting?
- Disuse, fades over time without practice
- Interference, new learning crowds out the old (or vice versa)
- Repression, unpleasant memories pushed out of conscious recall
- Counter with overlearning, meaningful association, frequent review, positive experience
Define transfer of learning. Give an example of negative transfer in glider training.
- Positive transfer, prior learning helps the new task (e.g., a power pilot already understands rudder coordination)
- Negative transfer, prior learning interferes (e.g., a power pilot pulling power-off the throttle on a glider tow release; or pushing for the runway in an engine-out instead of flying best-glide attitude)
- The instructor's job is to maximize positive and explicitly call out negative
What is Maslow's hierarchy of needs and why does it matter to instructors?
- Five tiers: physiological → safety → belonging → esteem → self-actualization
- Lower needs must be reasonably met before higher-order learning occurs
- An airsick, dehydrated, scared, or self-conscious student is not learning, fix the lower tier first
Name common defense mechanisms students show. Give an example you've seen.
- Denial, repression, rationalization, projection, displacement, reaction formation, compensation, fantasy, resignation
- Example: a student who blew the landing pattern blames the wind ("rationalization") instead of acknowledging late base turn
- Recognize them, don't reinforce them, return focus to the actual cause + correction
What's the difference between anxiety and stress, and how do you manage each in a student?
- Anxiety, fear of the unknown / loss of control; mental
- Stress, body's response to a demand; physical
- Manage by setting clear expectations, demonstrating maneuvers, normalizing mistakes, and giving the student progressively more authority over the flight
- Severe or persistent reactions, refer the student to a professional, do not push past their limits
List a few of the rules for good human relations between instructor and student.
- Treat students as adults; respect dignity in front of others
- Praise in public, correct in private
- Be consistent, same standard every flight
- Listen actively before correcting
- Admit when you don't know, model honesty
How does instructor behavior affect student aeronautical decision-making (ADM)?
- Students model what the instructor does, not only what they say
- Cutting corners, hot-dogging, sloppy preflight, student learns it's acceptable
- Verbalize the decisions: "I'm not flying because thunderstorm forecast at 1500z; here's why"
Name the four steps of the teaching process.
- Preparation, objectives, lesson plan, equipment, prior review
- Presentation, lecture, demo-perf, discussion, etc.
- Application, the student performs the task
- Review and evaluation, critique, quiz, debrief
What makes a good performance objective?
- Description of skill or behavior, what the student will do
- Conditions, under what circumstances
- Standards, to what level (e.g., ±5 kt, ±10°)
- Pulled directly from the PTS / ACS for required maneuvers
What's the difference between a training objective and a completion standard?
- Objective, what the student will be able to do at the end of the lesson
- Completion standard, measurable proof the objective was met (e.g., "demonstrate stall recovery to instructional standard, three consecutive successful recoveries")
Name the major teaching methods and describe when each is best.
- Lecture, large group, factual content, time-limited
- Guided discussion, student already has some background; promotes critical thinking
- Demonstration-performance, psychomotor skills (the bread and butter of flight instruction)
- Computer-assisted / video, repetitive review, simulation, ground training
- Cooperative or group learning, peer teaching, e.g., students debriefing each other
Walk me through the five steps of the demonstration-performance method.
- Explanation, what, why, how
- Demonstration, instructor performs to standard, narrates
- Student performance, student tries; instructor talks them through
- Instructor supervision, student does, instructor observes silently except for critical safety
- Evaluation, critique, replay, identify next focus
What are the parts of a lesson?
- Introduction, attention, motivation, overview ("AMO")
- Development, main body, build from known to unknown
- Conclusion, retrace, retain, review what was taught
What's the difference between a critique and an evaluation?
- Critique, instructional, formative, ongoing, aimed at improvement
- Evaluation, measure performance against a standard at a specific point (PTS, stage check, written test)
- A critique can be part of every lesson; an evaluation is event-driven
What are the characteristics of an effective critique?
- Objective, flexible, acceptable, comprehensive, constructive, well-organized, thoughtful, specific
- Address performance, not personality
- Balance positive and negative; always end with a path forward
What's the difference between an open-ended and a closed-ended question? Which builds critical thinking?
- Closed, yes/no or single fact ("Is VNE (Never Exceed Speed) 130 knots?")
- Open-ended, requires explanation ("Why is VNE (Never Exceed Speed) lower in rough air?")
- Open-ended drives correlation-level learning; closed is fine for rote checks
What kinds of questions should an instructor avoid?
- Puzzle, too many parts; student doesn't know what's being asked
- Oversize, too broad ("Tell me about weather")
- Toss-up, guessing-game with no clear answer
- Bewilderment, vague language
- Trick, designed to embarrass
- Irrelevant, outside the lesson's scope
What are the characteristics of a good written test question?
- Reliability, yields consistent results across attempts
- Validity, actually tests what you intended
- Usability, clear language, appropriate length
- Objectivity, same answer judged the same way regardless of grader
- Comprehensiveness, covers the material proportionally
- Discrimination, separates strong from weak performers
What are the professional traits of a flight instructor?
- Sincerity, acceptance of the student, personal appearance and habits, demeanor, safety practices, proper language
- Continuing self-improvement and currency
- Keep promises; admit limits; refer the student elsewhere when warranted
What are an instructor's responsibilities for student supervision and surveillance?
- Ensure the student is fit, current, properly endorsed, and within their limits before each flight
- Assess every flight, never assume "they got it" without verification
- Withhold solo / cross-country authorization until proficiency is consistent, not occasional
A student is showing signs of severe stress that you cannot manage. What do you do?
- Stop training; do not push them past safe limits
- Refer them to an Aviation Medical Examiner or other qualified professional
- Document the conversation in your records
- It is not the CFI's role to diagnose, only to recognize and refer
What's the CFI's responsibility for endorsements and recommendations?
- Endorsements certify that the student has met specified training and proficiency requirements
- The CFI is legally accountable for the truth of every endorsement they sign
- Use AC 61-65 standard wording; include CFI cert #, expiration, signature, date
- Don't sign if you haven't actually given/observed the training claimed
What's the CFI's role in conducting a flight review?
- Minimum 1 hour ground + 1 hour flight (§61.56)
- Review of regs, maneuvers, and procedures the CFI deems necessary for safe PIC privileges
- No pass/fail, but CFI must be satisfied to endorse; otherwise, recommend further training
- Endorse only after the review is satisfactorily completed
What's the difference between a syllabus and a lesson plan?
- Syllabus, overall course plan: blocks of training, sequence, milestones, completion standards
- Lesson plan, single lesson: objective, content, schedule, equipment, instructor / student actions, completion standards
- The syllabus drives the order; the lesson plan drives the day
What are the parts of a written lesson plan?
- Objective
- Elements (content)
- Schedule (time allotted)
- Equipment / instructional aids
- Instructor actions
- Student actions
- Completion standards
Why should a written lesson plan be used even by an experienced instructor?
- Ensures all elements are covered, not just the easy ones
- Provides consistency across students and lessons
- Forces preparation, protects against improvising poorly
- Becomes a record of what was actually taught
How would you adjust a lesson for a student with a strong technical background but no flying experience?
- Shorten ground sessions on theory they already grasp (lift, weather, regs they self-studied)
- Spend more time on motor-skill build-up, coordination, sight picture, energy management
- Watch for over-confidence in the cockpit; technical understanding ≠ stick-and-rudder
II.Technical Subject Areas G(Task K + at least one other)
Refs: GFH; PHAK; AIM; 14 CFR parts 1, 61, 91; AC 61-65, 61-67, 61-94, 90-48; 49 CFR 830; GFM.
Name the four types of hypoxia and what causes each.
- Hypoxic, not enough O₂ in the air or partial pressure (altitude)
- Hypemic, blood can't carry the O₂ (CO poisoning, anemia, blood loss)
- Stagnant, circulation problem; blood not delivering O₂ (cold, G-loading, heart issues)
- Histotoxic, cells can't use the O₂ (alcohol, drugs)
What are the symptoms of hypoxia and what are the first signs you'd see in a student?
- Cyanosis, headache, decreased reaction time, impaired judgment, euphoria, visual impairment, drowsiness, lightheadedness, numbness, tingling
- First signs: subtle, slowed responses, poor decisions, "off" behavior
- Insidious, the affected pilot rarely recognizes it themselves
When is supplemental oxygen required for the pilot?
- Above 12,500 ft MSL for more than 30 minutes, required for pilot
- Above 14,000 ft MSL, required at all times
- Above 15,000 ft MSL, must be provided to passengers
What is hyperventilation and how does the pilot recover?
- Excessive breathing flushes CO₂ from the blood; chemistry imbalance
- Symptoms overlap with hypoxia, visual impairment, dizziness, tingling, muscle spasms, eventual unconsciousness
- Recovery: slow the breathing rate, talk aloud, breathe into a bag if available
- If in doubt at altitude, assume hypoxia first, descend, then evaluate
Walk me through the alcohol rule and the limits in §91.17.
- 8 hours, bottle to throttle
- 0.04 BAC, no act/attempt as crewmember
- While under the influence, no flight regardless of time elapsed
- While using any drug that affects safety, no flight
How long must a pilot wait after scuba diving before flying?
- 12 hours after non-decompression dive if flight altitude ≤ 8,000 ft MSL
- 24 hours after non-decompression dive if flight altitude > 8,000 ft MSL, or after any decompression dive
Name three visual illusions on approach and how they affect a glider pilot.
- Runway slope, upsloping makes you think you're high; downsloping makes you think you're low
- Runway width, narrow runway feels high, wide runway feels low
- Featureless terrain / haze, you feel higher than you are; tend to undershoot
- Counter with the glider's natural reference: aim point, sight picture, and (when available) PAPI / VASI
What is spatial disorientation, and how do you teach a student to recognize and recover?
- Confusion about position, attitude, or motion relative to Earth, usually after losing visual reference
- Common types: leans, graveyard spiral, somatogravic (head-up illusion on acceleration)
- Recover by trusting instruments (or, in glider VFR, the horizon and yaw string), not the seat of your pants
- Prevention: stay VFR, keep horizon visible, exit cloud immediately
Describe the proper outside scan technique.
- Sectors of about 10°, pause 1 second per sector to allow eye to focus
- Sweep horizon left-to-right or right-to-left; include above and below
- Empty-field myopia in haze, eyes relax to ~3 ft focus; deliberately re-focus on a distant object
Where on the windshield is a collision-course aircraft? Why?
- It will appear stationary, no relative motion
- That's also why it's hardest to detect, the eye is drawn to motion
- Counter with deliberate scanning of the whole windshield, not just where motion happens
What's "see and avoid" and where does it come from?
- Each pilot has the regulatory duty to see other aircraft and avoid them when conditions permit
- Applies to all VFR ops; ATC separation does not relieve the duty
What's the right-of-way order between a glider, a powered airplane, and a balloon?
- Balloon, has right-of-way over all other categories
- Glider, has right-of-way over airships, airplanes, rotorcraft
- Aircraft towing or refueling another, has right-of-way over all engine-driven aircraft
- Distress aircraft trump all of the above
When does collision risk peak in a typical training day?
- Near airports, in pattern, on common practice areas, in good weather
- Around thermals, multiple gliders converging on same lift
- Within 10 nm of an airport, below 3,000 ft AGL, most reported NMACs occur here
Why deliberately use distractions in training?
- Many accidents have a distraction as a causal factor, students must learn to manage them
- Realistic distractions force the student to prioritize aviate / navigate / communicate
- Builds the habit of noticing when attention is being captured at the cost of flying the airplane
Give two examples of realistic distractions you'd use during a glider lesson.
- Drop a chart in their lap while on tow; observe whether they keep flying the position
- Ask a question that requires looking inside the cockpit during pattern entry
- Simulate a radio call mid-thermal
- "Find that other glider 4 o'clock low" while you're maneuvering
What's the difference between distraction and harassment?
- Distraction, realistic event; student manages it as part of normal flying
- Harassment, relentless, irrelevant, or designed to overwhelm; produces stress without learning
- Stop and redirect immediately if the student stops learning
Name the four forces in flight and how they balance in a steady glide.
- Lift, weight, thrust, drag
- In steady unpowered glide: weight is the only thrust source, its forward component along the flight path balances drag
- Lift balances the perpendicular component of weight; airspeed sets the L/D ratio
Name the three axes and the controls that move the glider about each.
- Longitudinal (nose-to-tail), ailerons; roll
- Lateral (wingtip-to-wingtip), elevator; pitch
- Vertical, rudder; yaw
Define angle of attack. What happens at the critical AOA?
- Acute angle between the chord line and the relative wind
- Lift increases with AOA up to the critical angle (~16 to20°), then airflow separates and lift drops off, stall
- A wing can stall at any airspeed and any attitude, only the AOA matters
What's the difference between induced drag and parasite drag, and how do they vary with airspeed?
- Induced drag, by-product of lift; decreases as airspeed increases
- Parasite drag, form, skin friction, interference; increases as airspeed increases (square law)
- Total drag minimum is best L/D speed, where the two curves cross
Describe positive static and dynamic stability.
- Static, initial tendency after disturbance: positive returns toward original, neutral stays, negative diverges
- Dynamic, behavior over time: positive damps oscillations, neutral sustains, negative grows
- Trainers are designed positive in both, recovery occurs hands-off
Describe how a stall progresses into a spin.
- Stall = exceed critical AOA, airflow separation, loss of lift
- If the airplane is uncoordinated or one wing is more stalled than the other (yaw + stall), one wing drops further; auto-rotation begins
- Spin = sustained yaw + stall; recovery requires breaking both
What does each primary control do, and around which axis?
- Elevator, pitch about the lateral axis; controls AOA and airspeed
- Ailerons, roll about the longitudinal axis
- Rudder, yaw about the vertical axis; coordinates turns, counters adverse yaw
Define adverse yaw. Why is it especially noticeable in gliders?
- The down-going aileron generates more induced drag than the up-going one, nose yaws away from the intended turn
- Gliders have long wings + low drag, adverse yaw is large and persistent
- Counter with rudder coordination, leading the aileron with rudder in the direction of turn
Why is rudder coordination more critical in a glider than in most powered airplanes?
- Long wingspan, low total drag, large adverse yaw moment
- No prop slipstream over the rudder, only airflow from forward motion
- Yaw kills L/D, uncoordinated flight bleeds energy fast in a glider
What's the purpose of trim, and how is it different from holding control pressure?
- Trim relieves continuous control pressure for the desired speed
- Set attitude / airspeed first, then trim, never trim to fix an attitude
- Reduces fatigue, improves precision; especially important on long tows and thermalling
Compare spoilers, dive brakes, and flaps. What does each do to lift, drag, and pitching moment?
- Spoilers, disrupt lift on top of wing; decrease lift, increase drag; small pitch change
- Dive brakes, extend top + bottom; large drag increase; small lift change; some pitch-down
- Flaps, change wing camber; increase lift (and drag); usually pitch-down with extension
- In Blanik L-23, top-surface dive brakes; expect drag dominance, modest pitch trim shift
A student opens spoilers on tow and you can't get full closure. What happens to airspeed and climb rate?
- Drag spikes, towplane will see a heavier glider; climb rate drops noticeably
- Glider may struggle to maintain tow position; signal towplane and release if climb performance is unsafe
- Reinforces why preflight positive-check of the spoiler lock is non-negotiable
Define weight, arm, and moment.
- Weight, force from gravity (lb)
- Arm, distance from datum (in)
- Moment, weight × arm (in-lb)
- Total moment ÷ total weight = CG location
What happens if the CG is too far forward? Too far aft?
- Forward CG, more stable but harder to flare; higher stall speed; increased elevator force
- Aft CG, less stable, lighter elevator forces, harder spin recovery, lower stall speed
- Aft CG is the more dangerous extreme, recovery margins shrink fast
A 200-lb pilot exceeds the front-seat max in a Blanik L-23. What are your options?
- Check the Type Certificate Data Sheet and GFM weight schedule
- If the front seat alone is over the structural max, the airplane cannot be flown with that pilot, period
- If the issue is CG, consider tail weight or ballast per GFM instructions only, never improvised ballast
- Document the W&B run for the flight in the records
What's the purpose of water ballast and what's the trade-off?
- Increases wing loading → higher best-glide speed → better cross-country speed in strong lift
- Trade-off: higher stall speed, longer landing roll, slower climb in weak lift
- Must be dumpable before landing if specified by the GFM
What's the difference between pilotage and dead reckoning?
- Pilotage, navigation by reference to ground features
- Dead reckoning, computed track from heading, airspeed, time, wind
- Glider XC typically combines both, plus moving-map GPS as a check
What's the most important factor in selecting an off-airport landing area, and what do you teach the student to look for?
- Size, long enough for landing roll plus margin
- Surface, smooth, firm, free of obstacles, ditches, fences, wires
- Slope, land uphill if possible; never downhill in strong winds
- Surroundings, approach clear of obstacles; identify wind direction (smoke, water, dust, flags)
- S: the "5 S", Size, Surface, Slope, Surroundings, Stock (livestock)
How do you teach a student to make the go / no-go decision on a cross-country flight?
- Set personal minimums in advance, soaring forecast, surface wind, ceiling, visibility, density altitude
- Identify go-ahead points along the planned route, beyond which retreat to home is no longer possible
- Teach the student to commit to the abort decision before reaching the point of no return
Which parts of 14 CFR are most relevant to glider operations, and what does each cover?
- Part 1, definitions
- Part 61, pilot certification (eligibility, privileges, endorsements, currency)
- Part 91, general operating rules (right-of-way, VFR mins, oxygen, fuel, etc.)
- Part 43, maintenance requirements
- 49 CFR 830, NTSB notification and accident/incident reporting
When must NTSB be notified, and when is a written report required?
- Immediate notification, accidents (death, serious injury, substantial damage), and certain serious incidents (in-flight fire, flight control failure, etc.)
- Written report (Form 6120.1), within 10 days of an accident; within 7 days of an overdue aircraft
- For incidents, written report only if requested by NTSB
What's the difference between a Type Certificate Data Sheet, an Airworthiness Certificate, and the Glider Flight Manual?
- TCDS, FAA document defining the type design (limits, equipment, configurations)
- Airworthiness Certificate, issued to a specific aircraft, must be displayed; remains valid as long as maintained per regs
- GFM / POH, operating handbook for that specific glider; required onboard; primary source for limitations and procedures
List the airspace classes and the ceiling/floor of each.
- A, 18,000 MSL up to FL600. IFR only. Glider waiver required to operate.
- B, surface or floor up to typically 10,000 MSL around busy airports. Two-way radio + clearance required.
- C, surface to 4,000 AGL around medium airports. Two-way radio communication required.
- D, surface to typically 2,500 AGL around towered airports. Two-way radio required.
- E, controlled, generally everywhere not A/B/C/D, starting at 700 or 1,200 AGL up to 17,999 MSL
- G, uncontrolled, surface to base of E
What are the basic VFR weather minimums for a glider in Class E below 10,000 MSL?
- 3 SM visibility
- 500 below, 1,000 above, 2,000 horizontal from clouds
- Above 10,000 MSL: 5 SM, 1,000 below / 1,000 above / 1 SM horizontal
- Class G has reduced day-VFR mins below 1,200 AGL, but pattern operation requires "clear of clouds"
Name the special-use airspace types and which ones a glider may not enter without coordination.
- Prohibited (P), flight not allowed (e.g., P-56 over the White House)
- Restricted (R), flight subject to restrictions when active; coordinate or stay clear
- MOA, military training; VFR allowed but extreme caution
- Warning Areas, over international waters; same caution as MOA
- Alert Areas, high-density training; VFR allowed
- Controlled Firing Areas (CFA), activity ceases when aircraft approaches
- TFRs, temporary; check NOTAMs every flight
What entries are required in a student's logbook for each instructional flight?
- Date, total time, aircraft make/model/ID
- Type of pilot experience (dual received, solo, etc.)
- Conditions of flight (day/night, etc.)
- Type and number of launches/landings
- Brief description of the lesson and the CFI's signature with cert # and expiration
What endorsement is required before a glider student pilot solos? Cite the AC 61-65 paragraph.
- Pre-solo aeronautical knowledge, AC 61-65 §A.1
- Pre-solo flight training, AC 61-65 §A.2
- Solo flight (each additional 90 days), AC 61-65 §A.3
- And, for the make and model, AC 61-65 §A.4
- The candidate should be able to write these endorsements verbatim from memory or quickly find them in AC 61-65
What endorsement is required to recommend a candidate for the practical test?
- Required: 61.39(a)(6)(i) endorsement that the applicant has received required training and is prepared for the practical test
- Plus aeronautical knowledge test endorsement (61.35) if not yet recorded
- Wording is in AC 61-65 §A.32 (or current paragraph for the rating)
- The CFI's signature on this endorsement is a legal certification, sign only when truly satisfied
What records must the CFI keep, and for how long?
- List of every student endorsed for solo or for a practical test
- Record of each endorsement given, with date
- Retain for 3 years after the endorsement
Walk me through the 14 CFR §61.56 flight review endorsement and what makes it valid.
- Required: 1 hour of ground + 1 hour of flight, every 24 calendar months
- Includes review of regs (Part 91 specifically) plus maneuvers / procedures CFI deems necessary
- Endorsement only after the CFI is satisfied; if not, log the time as dual given without the endorsement
- Wording is in AC 61-65 §A.40 (or current paragraph)
III.Preflight Preparation G(at least one Task)
Refs: 14 CFR parts 43, 61, 91; GFH; FAA-H-8083-28 (B); GFM; NOTAM.
What documents must a pilot carry when acting as PIC?
- Pilot certificate
- Photo ID (driver's license or government ID)
- Medical or alternative, for glider PIC, no medical required, but a self-certification of fitness is implied each flight
What documents must be onboard the glider? Use the standard memory aid.
- A, Airworthiness certificate
- R, Registration
- R, Radio station license (international ops)
- O, Operating Handbook
- W, Weight and balance data
- "AROW", common memory aid; some use "ARROW" if including radio license
What inspections is a glider required to have? Use the memory aid.
- A, Annual (every 12 calendar months), required for all aircraft
- V, VOR check (every 30 days, IFR only, N/A for VFR glider)
- 1, 100-hour inspection (only if used for hire / instruction for compensation)
- A, Altimeter / pitot-static (24 cal months, IFR only, N/A for VFR glider)
- T, Transponder (24 cal months, only if installed and in use)
- E, ELT (12 cal months, required only if installed, gliders generally exempt)
- "AV1ATE", annual + 100-hr are the two routinely tracked for our gliders
What's the difference between preventive maintenance, maintenance, and a major alteration? Who can do each?
- Preventive maintenance, simple, listed in Part 43 Appendix A; PIC may do for own glider
- Maintenance, anything else routine; A&P required
- Major alteration / repair, A&P with IA, or repair station; FAA Form 337
A student arrives at the gliderport with a recently lapsed pilot certificate. Are they legal to fly with you as PIC?
- Pilot certificates do not lapse, they are issued for an indefinite period unless surrendered, suspended, or revoked
- What does lapse: currency (90-day passenger, 24-month flight review), endorsements (90-day solo), medical (n/a for glider PIC)
- Student pilot certs do have an expiration, verify before solo
What weather products would you check before a glider flight, and in what order?
- Surface analysis / prog charts, big-picture pattern
- METAR / TAF, current and forecast at home airport and along route
- Soaring forecast / Skew-T, thermal index, lapse rate, top of lift, wind aloft
- AIRMET / SIGMET / Convective SIGMET, turbulence, IFR, icing, thunderstorms
- NOTAMs, TFRs, runway/airport status
- PIREPs, what the airplanes already up there are seeing
Define adiabatic, dry adiabatic lapse rate, and moist adiabatic lapse rate.
- Adiabatic, temperature change without heat transfer to/from environment (i.e., due only to expansion/compression)
- Dry adiabatic lapse rate, ~3°C / 1,000 ft (unsaturated parcel)
- Moist adiabatic lapse rate, ~1.5°C / 1,000 ft (saturated; latent heat released)
- Standard atmosphere lapse rate ≈ 2°C / 1,000 ft
What is the thermal index, and what does it tell you?
- The difference between the actual temperature aloft and what a parcel rising dry-adiabatically from the surface would be at that altitude
- Negative TI, air parcel is warmer than environment → unstable → thermals
- The more negative, the stronger / higher the thermals
- TI of 0 marks the top of usable lift
Explain how a sea breeze forms and why it matters in South Florida glider operations.
- Land heats faster than water → low pressure inland; sea breeze flows onshore mid-morning
- Sea-breeze front often produces convergence lift well inland by early afternoon
- Local effect: at X51, the east-coast sea breeze typically pushes inland by mid-day, kills thermals to the east, and creates a lift band along the convergence
What does an AIRMET vs SIGMET vs Convective SIGMET cover?
- AIRMET, light/moderate hazards (turbulence, icing, IFR, mountain obscuration); widespread; for all aircraft
- SIGMET, severe non-convective hazards (severe turb, severe icing, dust storms, volcanic ash)
- Convective SIGMET, thunderstorms; valid 2 hours; updated hourly
A student wants to launch with a 30 kt surface wind. What do you say?
- Check the GFM crosswind component limit and the towplane's limit too
- 30 kt straight down the runway may be operationally viable for advanced ops; for student training, no
- Discuss the actual hazards, wind gradient on rotation, control authority during ground roll, gust upset
- Use this as a teaching moment for personal-minimums framework
How does the airspeed indicator work, and what could cause an erroneous reading?
- Compares ram air pressure (pitot) to ambient static pressure → indicates dynamic pressure → calibrated to airspeed
- Errors: blocked pitot (reads like an altimeter), blocked static (reads inversely with altitude), water in lines
- Glider pitot tubes are typically unheated, be especially aware of bug or moisture blockage
What's a total-energy variometer and how is it different from a regular vario?
- A regular (uncompensated) vario shows altitude rate, including pitch-up energy trades (pulling up shows fake "lift")
- A total-energy vario subtracts the airspeed-change component → shows true air mass motion
- TE compensation comes from a TE probe on the fin (or from electronic compensation in modern instruments)
What are the limitations of the magnetic compass?
- Variation, true vs magnetic north (varies by location)
- Deviation, local interference from glider's metal/electrical (compass card)
- Magnetic dip, turning errors (UNOS, Undershoot North, Overshoot South), acceleration errors (ANDS, Accelerate North, Decelerate South)
- Accurate only in steady, level, unaccelerated flight
What does the yaw string tell you and where is it correctly mounted?
- Indicates yaw / sideslip, primary instrument for coordination in a glider
- Mounted on the canopy centerline, ahead of the pilot's natural eye line
- String trails opposite the slip: trailing left = nose yawed right of relative wind = step on left rudder to center
- "Step on the head of the snake"
Why would a glider be equipped with a barograph or flight recorder?
- Required for FAI badge claims (Bronze, Silver, Gold, Diamond, etc.)
- Records altitude trace + position over time; verifies achieved performance
- Modern flight recorders (FR) replace mechanical barographs; required for IGC-approved badge attempts
Define density altitude. How is it computed and why does it matter?
- Pressure altitude corrected for non-standard temperature
- Increases with hot/high/humid → less dense air
- Effect on glider: same true airspeed at higher indicated airspeed; longer ground roll on launch; tow climb degraded
- Use the rule of thumb: DA ≈ PA + (120 × ISA deviation in °C)
What is best L/D and why does it matter?
- The airspeed at which the glider achieves its maximum lift-to-drag ratio, the flattest glide in still air
- For a Blanik L-23, Vg ≈ 48 kt dual / 43 kt solo
- Above or below this speed, glide ratio decreases
- Adjust upward into headwind, downward into tailwind
Explain the polar curve. What does the bottom of the polar tell you?
- Plot of sink rate vs airspeed
- The minimum point on the polar = minimum sink airspeed (best for staying aloft)
- Tangent from origin to the curve = best L/D (best for distance)
- Tangent shifted by wind = adjusted best L/D for that wind component
List the V-speeds a Blanik L-23 student should memorize.
- VS (Stall Speed), 32 kt clean
- Vg (Best Glide / Best L/D, per GFM), 48 kt dual / 43 kt solo
- Vmin sink (Minimum Sink Airspeed, per GFM), 42 kt dual / 38 kt solo
- Vt (Max Aerotow Speed, per GFM), 81 kt
- VA (Maneuvering Speed), 86 kt
- VNE (Never Exceed Speed), 133 kt
- Approach: Vg + ½ headwind (~55 kt nominal)
How does load factor change with bank angle in a level turn? At what bank does it double?
- Load factor = 1 / cos(bank angle)
- 30° → 1.15 G; 45° → 1.41 G; 60° → 2.0 G; 75° → 3.86 G
- Stall speed increases as √(load factor), VS (Stall Speed) at 60° bank is ~1.41× VS level
IV.Preflight Lesson on a Maneuver to be Performed in Flight G(waived for add-on)
Refs: AIH; GFH; GFM.
Walk me through the lesson plan for [examiner picks a maneuver, e.g., steep turns]. What's the objective?
- State the maneuver, the standard from the PTS, and what the student will be able to do at the end
- Tie the objective to safety: why does this matter (energy management, awareness, recovery)
- Use the words from the PTS, that's the standard the student will be tested against
What instructional aids would you use, and why?
- Whiteboard for diagrams (sight picture, geometry)
- Model glider for attitude demonstration
- Polar / V-speed reference
- The actual cockpit on the ground, point to switches/controls in real position
- Don't lecture without aids, psychomotor maneuvers need visualization
Cover the elements of the maneuver, what comes first?
- Clearing, clear the area before any maneuver
- Setup, entry airspeed, configuration, altitude
- Execution, the maneuver itself, step by step
- Recovery / completion standard, exit altitude, heading, airspeed
- Always sequence: clear → set up → execute → verify
Name two common errors for the maneuver and how you'd recognize and correct each.
- Pull common errors directly from the PTS task description for that maneuver
- For each error: recognize (what you'd see), analyze (root cause), correct (specific input)
- Example for steep turns: bank angle creeping → recognize sight picture, correct with opposite aileron
How would you know the lesson succeeded?
- The student can state the objective in their own words
- The student performs the maneuver to PTS / training standard, repeatably, without prompting
- The student can identify and self-correct their own errors
- If any of those is missing, the lesson isn't done, schedule another
V.Preflight Procedures F(at least one Task)
Refs: AIH; GFH; GFM.
What's a positive control check, and why is it the most important step of assembly?
- One person on the controls, one resisting at each control surface, verifies the linkage is correctly connected and rigged
- Catches the most common assembly fatality: forgetting or mis-routing a control connection
- Done after all pins / safeties are installed and inspected
- Never skip, even on the same glider you assembled this morning
Walk me through the assembly checklist sequence.
- Wings on first, fuselage support; secure main pins
- Tail / horizontal stabilizer / elevator
- Control connections, ailerons, elevator, spoilers
- Safety pins / locking devices on every connection
- Clean and lubricate per GFM
- Positive control check
- Tape gaps if specified; check water/condensation in pitot/static; document the assembly in the logbook
Who can sign for an assembly, and where is it documented?
- A pilot may assemble their own glider for that flight per the GFM
- Document in the maintenance / aircraft records, which person assembled, which checks were performed
- Owner must keep records of assembly inspections per Part 43
What's the safe minimum number of crew to ground-handle a glider in a 15 kt wind?
- Minimum: pilot at controls + one wing-runner + one tail-walker; more in stronger or gusty wind
- Wing into the wind low; tail held; never let the wing rise unrestrained
- Use a tow vehicle, not muscle, for distance moves; never tow a glider with controls unsecured
A wing tip is left unattended on the ground. What can happen?
- Even a light gust can lift the unattended wing and roll the glider, control surface damage, ground loop, even hull damage
- Brief every helper before handling: "the wing tip never leaves a hand"
Why secure the canopy when leaving a glider unattended?
- Canopy can blow open, hinge can fail, plexiglass can shatter if the gust is strong
- Replacement canopies are months on backorder and many thousands of dollars
- Latch + lock + cover when parked; never leave the front canopy open unattended in any wind
Why follow the GFM preflight checklist instead of going from memory?
- Memory is unreliable, especially after distractions or interruptions
- Checklist forces a consistent flow; rare items (water in pitot, gear retraction lock) are not skipped
- If interrupted, restart the checklist from the beginning of the section
Walk me through your tow rope and weak-link inspection.
- Length check, minimum 200 ft (61 m), max 350 ft for student aero tow per GFH guidance
- Inspect for fraying, kinks, damaged splices, abrasion, UV degradation
- Weak link strength must match GFM spec, not stronger, not weaker (too strong can damage glider; too weak breaks routinely)
- Both ends serviceable, rings undamaged, schweizer or tost hitch in good condition
What kind of damage on the glider would you ground the airplane for?
- Cracks, dents, or wrinkles in the skin / spar area
- Loose or popped rivets / fasteners on critical structure
- Damaged control surface hinges, sloppy or binding controls
- Tow hitch damage or excessive wear
- Anything outside GFM tolerance, defer to A&P, not pilot judgment
A student finds a small dent on the leading edge during preflight. What's the right response?
- Don't fly until evaluated, dent on leading edge can cause flow separation, change stall behavior
- Document with photos, get an A&P or knowledgeable mechanic to inspect
- If in doubt, ground it. The teaching moment: when uncertain, the answer is always "no."
What's a proper passenger / student briefing before flight?
- Seat belt + harness operation
- Canopy operation, locking, emergency jettison if equipped
- Don't touch, point out anything they shouldn't move
- Bailout procedure if parachute equipped (yell, jettison canopy, unbuckle, jump, count, pull)
- Communication during flight (sterile cockpit on tow + pattern; ask anything in cruise)
- Motion sickness, water, fan, what to do
Why secure all loose items in the cockpit?
- Negative-G or steep maneuver can throw loose items into controls or against canopy
- A pencil under the rudder pedal at 200 ft AGL is a real emergency
- Brief the student that nothing rides in the lap or on the seat unsecured
What are the standard pre-launch wing signals between glider, ground crew, and towplane?
- Hold, one wing on the ground, ground crew extend arms out at their sides with a closed fist
- Open and close release, open palm shown to the glider pilot, then closed fist at the glider pilot
- Take up slack, one arm down, swung left to right like a pendulum
- Stop / abort, cut throat sign, flat hand drawn across the throat
- Begin takeoff, circular motion in front of the body, like drawing a circle
What's the rudder-waggle signal from a towplane mean?
- On the ground: ready for takeoff
- In the air: close and lock your airbrakes / spoilers
- Glider rudder waggle, "I cannot release" (rare; pre-arranged plan)
- Brief the signals on the ground, never invent them in the air
Glider can't release. What's the procedure and what signal to the towplane?
- Try the release a second time, pull aggressively, full travel
- If still attached, the towplane will fly to a safe area and release from their end
- Glider slow flag: rudder waggle (pre-briefed); some operations use a yellow card or radio
- Land long-on-tow only if both releases fail, pre-briefed procedure, level field, short approach
VI.Airport and Gliderport Operations F(at least one Task)
Refs: AIM; AC 90-66; AIH; GFH; PHAK.
A glider is approaching X51 (non-towered). What position calls would you make?
- 10 mi out: "Homestead traffic, glider [callsign], 10 northwest, inbound, will join 45 to left downwind runway 09, Homestead"
- Entering downwind, base, final, each with position + intent
- Clearing the runway: "Homestead traffic, glider clear of runway 09, Homestead"
- Use airport name at start AND end of every transmission per AIM
What are the ATC light gun signals? Memorize them.
- Steady green, air: cleared to land; ground: cleared for takeoff
- Flashing green, air: return to land; ground: cleared to taxi
- Steady red, air: give way / continue circling; ground: stop
- Flashing red, air: airport unsafe, do not land; ground: taxi clear of runway in use
- Flashing white, ground: return to start point on airport
- Alternating red/green, exercise extreme caution
What's the procedure if your radio fails on tow with the towplane?
- Rely on visual signals, pre-briefed before launch
- If none work, release at planned altitude over a safe area
- Towplane returns to land using light gun signals if at a towered airport
- Lost-comm procedures should be briefed every flight, not assumed
When does a glider need a transponder?
- Class A, B, C airspace require a transponder
- Above 10,000 ft MSL generally (excluding airspace at and below 2,500 AGL)
- Glider exception (§91.215(b)(3)): aircraft not originally certificated with an engine-driven electrical system, balloons, and gliders are exempt from the 10,000 MSL rule, and may operate inside the Mode C veil if outside A/B/C and below the lower of (Class B/C ceiling) or 10,000 MSL
- If installed, must be on and operating
What's the standard glider pattern entry, and how is it different from a power pattern?
- Standard: 45° entry to downwind at 1,000 ft AGL (gliders often fly tighter, closer in, lower energy)
- Glider patterns are flown closer to the runway than power because of finite glide range
- "Initial point" or "IP", abeam the touchdown, downwind, is the energy budget reference
- Differences from power: no go-around once committed; turn final slowly with airspeed margin
What's the maximum bank angle on turn from base to final, and why?
- PTS limit: 45°
- Practical limit: 30°. A late, steep, low base-to-final turn is the classic stall-spin accident profile
- Teach the student to plan the base turn so a steep correction is never needed
- If overshooting, go-around is not an option, accept long landing or, if hopeless, sideslip
How do you teach airspeed control on final, and why does it matter?
- Approach speed = best L/D + ½ headwind component
- Pitch attitude controls airspeed in unpowered approach; spoilers control glide path
- Too slow = stall margin lost; too fast = overshoot the touchdown point and float
- Drill it: "What's your airspeed?, What's your aim point?, What's your spoiler position?", repeat all the way down
What's a non-standard pattern for a glider, and when would you use one?
- Right-hand pattern at airports posted as such, or where glider operations have established a convention different from power traffic
- Off-airport low approach (low energy, short field), abbreviated base, no downwind
- "Tear-drop" entry from upwind side at very-busy operations
- Whatever the pattern, broadcast position and intent on CTAF; follow local convention
What's the difference between a runway holding-position marking and an ILS critical-area marking?
- Runway holding, yellow ladder pattern (4 lines, 2 solid + 2 dashed); cross only with clearance / proper communication
- ILS critical area, yellow "ladder" with horizontal bars at the base; protects ILS signal during low IFR
- Glider operations rarely intersect ILS critical area, but the candidate should still recognize it
Identify these runway lights: white, yellow, red.
- White, runway edge lights
- Yellow, last 2,000 ft of runway edge lights (caution zone), or full length on shorter runways
- Red, end of runway (when lit)
- Threshold: green from approach end; runway end: red from departure end
What does PAPI tell you, and is it useful for a glider?
- 4 lights: 4 white = high; 3 white + 1 red = slightly high; 2/2 = on glide path; 3 red + 1 white = slightly low; 4 red = low
- Calibrated for ~3° approach, most powered aircraft
- Glider final approach is steeper than 3° with spoilers, PAPI is a reference, not a target
- Use it as a sanity check, not as the primary glide path control
VII.Launches and Landings F
Refs: AIH; GFH; GFM. At least one Task per applicable launch group plus at least one landing.
Aero Tow
What's the standard before-takeoff check for an aero-tow launch?
- CBSIFTCBE or similar GFM checklist: Controls free + correct, Ballast within limits, Straps tight, Instruments set + altimeter, Flaps set, Trim set, Canopies closed + locked, (air) Brakes cycled + locked, Emergency plan briefed
- Plus the launch-specific items: hitch correct type, towline + weak link inspected, signals briefed
- Verify controls full travel + correct sense, traffic clear
What pre-launch agreements must be in place between glider pilot and tow pilot?
- Tow speed (e.g., 65 kt for Blanik)
- Release altitude
- Tow direction and pattern
- Wind / runway in use
- Emergency actions: rope break below 200 AGL, between 200 to500, above 500; tow plane power loss; failed release
- Signals: rudder waggle, wing rock, light gun (towered field)
Which hitch is required for aero tow vs ground tow?
- Aero tow: nose hitch (Tost or Schweizer)
- Ground tow (auto/winch): belly / CG hitch, pulls more on the CG, less pitch-up
- Some gliders are equipped with both; verify the correct one is selected before launch
- Wrong hitch on ground tow = nose-up pitch divergence on rotation = fatal
Walk me through a normal aero tow takeoff.
- Wings level, stick neutral, rudder ready
- "Take up slack" → "Hookup" → "Begin takeoff" signals
- Glider lifts off first (lighter wing loading), hold low tow-line position, fly just above the runway
- Wait for towplane to lift off, do NOT climb away alone
- Once towplane is airborne, transition to high tow position
In a crosswind takeoff, what's the technique to keep the glider tracking straight?
- Aileron into the wind to keep the upwind wing down
- Rudder to maintain alignment with runway
- Keep the glider directly behind the towplane, even if slightly upwind of centerline initially
- Minimize sideload on the gear and the towline
What's the difference between high tow and low tow?
- High tow, glider above the towplane's wake; standard US position
- Low tow, glider below the wake; standard European / Asian position; less drag, smoother in turbulence
- Wake is roughly halfway between the two positions, never sit in it
How do you transition from high tow to low tow safely?
- Slowly relax back pressure / push slight forward stick to descend through the wake
- Cross the wake quickly but smoothly, turbulence is brief
- Establish stable position in low tow with the towline reaching slightly downward
- Reverse the procedure to climb back; never linger in the wake
What's the sight picture for correct high tow position?
- Towplane wheels just above the horizon (or just above the cowling line of the towplane)
- Towplane appears centered in the canopy
- Towline trails slightly upward at the towplane end
- Calibrate by visiting the position deliberately on the first tow with a new student
What causes a slack line?
- Glider closing on towplane, rate of closure exceeds towplane's pull
- Common causes: towplane reduces power, glider exits a thermal, glider banks inside towplane's turn, heavy turbulence
- Slack line is dangerous: the snap-load when it goes taut can break the rope or damage the airframe
How do you correct a slack line?
- Yaw away from the slack with rudder, drives the glider laterally to extend the rope
- Use spoilers in small, smooth amounts to slow the closure
- Resist the urge to dive, that loads the rope when it tightens
- If correction will overstress the rope or weak link, release
What is "boxing the wake" and why do we teach it?
- Glider flies a rectangular pattern just outside the towplane's wake, left low, left high, right high, right low, back to center
- Builds tow-position precision and coordination
- Familiarizes student with wake boundaries and recovery
- Standard exercise on first dual flights and on every flight review
What are common errors on boxing the wake?
- Rectangle too large, wandering far outside the wake region
- Uncoordinated, student leads with aileron, no rudder
- Abrupt, jerky position changes, towline snaps tight
- Crossing through the wake instead of around it
Walk me through a normal release.
- Towline at normal tension (no slack)
- Clear the area, visual scan and call out
- Pull release; glider rises slightly as drag drops
- Right turn by the glider, left turn by the towplane (or the reverse, whatever's pre-briefed; standard US is glider right)
- Confirm the rope is gone (look at the nose ring)
- Trim for desired airspeed and continue the flight
When would you release immediately, even if not at planned altitude?
- Tow plane signals "release immediately" (rudder waggle)
- Inadvertent dive brake / spoiler deployment that you cannot close
- Towline malfunction or visible damage
- Towplane in trouble (smoke, abnormal flight path) and continuing tow risks both aircraft
- You're outside a safe glide range to a landable area and conditions are deteriorating
Rope break at 100 ft AGL on takeoff. What do you do?
- Land straight ahead on the remaining runway or in a clear area within ~30° of nose
- Do NOT attempt a 180° turn back, insufficient altitude, low airspeed, stall-spin risk
- Lower the nose to maintain best L/D, manage energy to ground
- This is the X51 rule: below 200 AGL, straight ahead, period
Rope break at 300 ft AGL. Now what?
- Above 200 AGL, a 180° turn back may be possible, but only if briefed and conditions allow
- Best 180° technique: 45° bank, coordinated, maintain best L/D, expect significant altitude loss (200 to400 ft)
- Land downwind on the remaining runway or wherever the turn-back ends
- Above 500 AGL, abbreviated pattern is usually best
- Brief the specific altitudes in the pre-takeoff briefing for that day's wind
Towplane loses power at 1,000 AGL. What's your action?
- Towplane will descend; you will receive rudder waggle (release signal)
- Release immediately
- Establish best L/D, plan for the runway or landable field
- Communicate with towplane on radio if possible
- Both pilots have separate problems now, focus on yours
Both releases fail. Procedure?
- Pre-briefed plan, pilot signals towplane (rudder waggle from glider)
- Towplane flies to a safe area; releases the rope from their end
- You then have a rope dangling; land at the planned alternate field; rope drops on landing
- If towplane release also fails, both land while still attached, on a long, clear runway, with very specific coordination
- Discuss the contingency before every flight; never improvise
Ground Tow (Auto / Winch)
How does the before-takeoff check differ from aero tow?
- Verify belly / CG hitch selected, not nose
- Confirm tow speed and signals with auto driver / winch operator
- Cable inspected end-to-end for fraying, kinks, weak link integrity
- Rotation altitude and abort criteria briefed
- Wind component must be within glider + winch / vehicle limits
Walk me through the climb profile on a winch launch.
- Initial ground roll: stick neutral, wings level, accept acceleration
- Liftoff at minimum safe airspeed; do NOT pitch up sharply
- Initial climb: shallow rotation to ~30° pitch over 2 to3 seconds
- Steepen the climb to maximum (45 to55°) once safely above gradient zone
- Maintain target airspeed within GFM range, too slow = stall, too fast = damage / overspeed
- Top of launch: relax pitch; cable runs out of pull or is released; transition to glide
What's porpoising on a winch launch and how do you stop it?
- Pilot-induced oscillation, over-control on pitch creates phugoid-like cycles
- Stop with smooth, neutral elevator inputs, fly the airplane, don't chase the variation
- If severe and the climb is unstable, release immediately
Cable breaks during the steep climb portion of a winch launch. Action?
- Immediately push to lower the nose, recover from steep pitch attitude
- Establish best glide; do not stall
- If very low (under ~200 ft), land straight ahead
- If higher, abbreviated pattern, downwind landing on remaining runway is normal for ground-tow ops
- Practice this regularly; it's the highest-risk failure mode of winch flying
Glider overruns the cable on takeoff. What does that mean and what do you do?
- Cable goes slack because glider closes on the winch / vehicle faster than it pulls
- Tow is effectively over, pull the release
- Land immediately on remaining runway
- Often caused by winch operator pulling too slow or vehicle losing traction
Self-Launch
What are the safety precautions before starting the engine on a self-launch glider?
- Wheel chocks or brake set; nose pointed in safe direction
- "Clear prop" call before energizing
- Area behind the glider clear of people, equipment, loose debris
- Follow GFM start sequence, many self-launch gliders have unique procedures (priming, pitot heat, electric vs combustion)
- Monitor temps + pressures during warm-up before taxi or launch
What's special about taxiing a self-launch glider?
- Wingspan, glider wings are much wider than a typical airplane; clear obstacles
- Limited maneuverability with one main wheel + tail wheel
- Wind sensitivity, never taxi cross- or downwind faster than safely controllable
- Use wing-walker on the ground if conditions warrant
- Brakes typically light, plan turns and stops in advance
What additional items are on the before-takeoff check for a self-launching glider?
- Engine: temperatures, pressures, magnetos, prop pitch, fuel quantity
- V-speeds memorized: VX (Best Angle of Climb), VY (Best Rate of Climb), abort speed, engine-out target
- Climb gradient adequate for terrain (especially short field or hot/high)
- Engine-out plan, at what altitude do you go for runway, off-airport, restart attempt
- Static-source position (some gliders have alternate static)
How does a self-launch climb differ from aero tow?
- Airframe is the only platform, no towplane to follow
- Climb at VY (Best Rate of Climb) for best rate (or VX (Best Angle of Climb) if obstacle clearance needed)
- Maintain heading + climb attitude as in any single-engine airplane
- Brief engine-out targets at every 100 ft of climb until safe glide range to runway
- Crosswind correction same as airplane: aileron into wind, opposite rudder for track
Walk me through engine shutdown for soaring transition.
- Reach planned soaring altitude
- Reduce power per GFM cooling schedule (typically 1 to2 minutes of cooling)
- At specified airspeed, perform mfr-recommended feather / position / stow sequence
- Switch static source if required by GFM
- Reduce electrical load, set radios to needed channels only
- Confirm engine fully secured before continuing soaring flight
When should you decide to restart the engine vs commit to a glide landing?
- Plan a minimum-restart altitude, below it, do not attempt; commit to landing
- For most self-launch gliders, ~1,000 to1,500 AGL above the intended landing area
- Restart sequence per GFM: airspeed, unfeather, prime / start, warm up, climb
- If restart fails on first attempt, do not exhaust altitude on subsequent tries, land
Engine power loss at 200 AGL during launch. Action?
- Land straight ahead, same rule as towed gliders
- Do not attempt restart; do not turn back below 200 AGL
- Lower the nose to best glide; manage energy to a clear landing area within ~30° of nose
- The fact that it's an engine and you have a starter is no temptation, fly the glider
Smoke or fire in the engine compartment in flight. Action?
- Fuel off, mixture cut, mags off, master off (per GFM)
- Side-slip if smoke is entering cockpit, keep flames away from canopy
- Land at nearest suitable airport / field, no go-around
- Bail-out if equipped and fire is uncontrolled
Landings
What's the standard glider approach airspeed and how is it adjusted?
- Approach airspeed = best L/D + ½ headwind component
- Add for gusts (typically + the gust factor / 2)
- Trade airspeed margin for spoiler authority, never bleed below stall margin to make a precise touchdown
- For Blanik L-23: ~55 kt nominal in still air, more with wind
What's the proper crosswind landing technique for a glider?
- Wing-low (sideslip from final), the typical glider method, hold upwind aileron and opposite rudder throughout final so the longitudinal axis stays aligned with the runway, more predictable than crab-and-kick at glider approach speeds
- Alternative: crab and kick, crab on final, transition to slip just before touchdown
- Touch down on the upwind main wheel first
- Roll out with aileron progressively increasing into wind, rudder for directional control
- Glider's long wing span makes it sensitive to wing-low touchdown, level the wings before they reach a tip
What's the PTS standard for a normal glider landing?
- Approach airspeed ±5 kt
- Touchdown smoothly within designated area
- No appreciable drift, longitudinal axis aligned
- Stop within 100 ft of designated point
When would you use a forward slip vs a side slip?
- Forward slip, to lose altitude without gaining airspeed; ground track unchanged
- Side slip, for crosswind alignment; track follows runway centerline
- Turning slip, slip while turning; useful for steep approach into a confined area
- Slip is a glider's "extra brake" beyond the spoilers, useful when overshooting on final
What does a slip do to the airspeed indicator, and why?
- Pitot is no longer aligned with relative wind → reads low (sometimes very low)
- Glider is actually flying faster than indicated
- Don't chase the indication, fly attitude (sight picture) and trust the pre-set slip technique
- Recover from slip well above flare height; verify airspeed once aligned
When would a downwind landing be necessary, and what's different about it?
- Off-airport landing forced by terrain or wind shift; pattern altitude exhausted before turning to upwind
- Higher groundspeed at touchdown, significantly longer roll-out
- Approach airspeed: same indicated, but groundspeed is +2× tailwind
- Glider feels "fast", resist the urge to bleed airspeed; airspeed is the only stall margin
- Maximum tailwind for downwind landing per GFM (typically 5 to10 kt limit for safety)
A student wants to take off downwind because the runway 09 is in use but the wind is from the east at 10 kt and they're already lined up on 27. What's the call?
- No. Reposition; never accept downwind for routine ops
- Tailwind takeoff: longer roll, slower acceleration, reduced climb gradient, every margin shrinks
- Teaching moment: the time saved by not repositioning is not worth the loss of margin
VIII.Fundamentals of Flight F(at least one Task)
Refs: AIH; GFH.
What's the standard for a straight glide on the practical test?
- Specified heading ±10°
- Specified airspeed ±5 kt
- Coordinated, trimmed, no wandering
Why does a glider tend to wander off heading in straight flight?
- Long wings + light loading = sensitive to gust and asymmetry
- Pilot's natural drift if not actively scanning a reference point
- Out-of-trim airplane = constant pressure on stick = drift
- Fix by setting trim, picking distant ground reference, scanning yaw string
What's the technique for a coordinated turn?
- Roll-in: aileron + simultaneous rudder in same direction (rudder leads aileron in slow gliders)
- Hold bank: neutral or slight aileron-out to counter overbank; back pressure to maintain altitude / airspeed
- Roll-out: aileron + rudder in opposite direction; release back pressure
- Yaw string centered throughout
What's the PTS standard for a turn to heading?
- Desired airspeed ±5 kt
- Rollout on heading ±10°
- Coordinated, smooth, planned
IX.Performance Airspeeds F(at least one Task)
Refs: AIH; GFH; GFM.
Define minimum sink airspeed.
- The airspeed at which the glider has the lowest rate of descent in still air
- Slower than best L/D, slightly higher sink rate per mile, but lowest sink rate per second
- Used for: thermalling (max time aloft per turn), staying aloft in weak lift, holding pattern over a known thermal
When would you use min sink vs best L/D?
- Min sink, staying aloft is the goal; weak / thermal lift; circling
- Best L/D, covering distance; cruising between thermals; final glide home
- Adjust best L/D up for headwind, down for tailwind; min sink doesn't change with wind
What is the MacCready theory of speed-to-fly?
- Optimum cruise speed between thermals depends on the expected lift rate of the next thermal
- Stronger expected lift → fly faster between (less time at lower altitude pays off)
- Weaker expected lift → fly slower (preserve altitude)
- The MacCready ring / setting on a vario gives the recommended airspeed for any given sink rate
How do you adjust speed-to-fly for sink and lift en route?
- Flying through sink → speed up (get out of the sink quickly)
- Flying through lift en route → slow down (extract energy)
- "Dolphin flight", continuous adjustment in response to vario
- Rule of thumb without instrument: in sink, push to ~best L/D + 10 to15 kt; in lift en route, slow to min sink
X.Soaring Techniques G/F(F if conditions; G otherwise; at least one Task)
Refs: AIH; GFH.
How does a thermal form?
- Sun heats ground unevenly, dark fields, parking lots, rocks heat faster than grass / water
- Heated surface warms the air above; air becomes less dense and rises
- Thermal rises until it reaches air of equal temperature (LCL or top of unstable layer)
- Cumulus cloud often marks the top; "blue thermal" if conditions don't reach LCL
How do you recognize a thermal in the air?
- Vario shows positive indication; one wing lifts
- Glider yaws toward the lift in some thermal structures (ragged edge)
- Birds circling overhead; cu cloud forming above; haze dome
- Other gliders already circling, join below them, same direction
What's your initial entry technique once you find lift?
- Slow to thermal speed (just above min sink)
- Bank into the lifting wing, usually 30 to45° initially
- Roll out briefly to feel for the strongest core, then re-bank into it
- Adjust bank to keep the glider in the strongest part of the thermal
How do you decide which direction to circle?
- Match other gliders already in the thermal (FAA rule + safety convention)
- If alone and entry was clear: turn into the lifting wing on entry
- Once established, direction is fixed unless thermal is lost and re-entered
What conditions produce ridge lift?
- Wind blowing perpendicular (within ~30°) to a long ridge
- Air forced up the windward face → continuous lift band
- Wind speed minimum ~12 to15 kt for usable lift
- Lift band typically extends 2× the ridge height upward, maybe 1× outward from face
What's the rule of thumb for approaching and crossing a ridge?
- Approach at 45° to the ridge, never head-on
- Approach from the windward side (the lift side); never approach a ridge from leeward at low altitude
- Cross only at altitude high enough that the rotor on the lee side will not slam you down
- Plan turn-around well before reaching the ridge in case lift drops
What are the common errors in ridge soaring?
- Approaching at 90° → hitting sink directly into the face
- Flying too close to the face → lose maneuvering room
- Flying too fast in lift → high penetration but high sink
- Lost orientation, ending up downwind of the ridge with insufficient energy
How does mountain wave form?
- Strong, steady wind (~25 kt+) perpendicular to a substantial ridge or mountain range
- Stable air aloft, wind oscillates downstream of the ridge
- Wave crests visible as lenticular cloud caps; may extend 5,000+ ft above the ridge
- Lift on upwind side of crest; sink on downwind side; rotor turbulence below the lowest crest
What's the difference between wave lift and rotor?
- Wave, smooth, steady, often very strong (1,000+ fpm); above the rotor zone
- Rotor, violent turbulence in a roller cylinder downwind of the ridge; can break a glider
- Entry into wave goes through rotor, smooth above, very rough below
- Plan vertical entry through the rotor at maneuvering speed, VA (Maneuvering Speed); minimize time in turbulence
What additional equipment do you need for wave flight?
- Oxygen, wave can carry you above 18,000 MSL routinely
- Cold-weather clothing, ISA at FL200 is about -25°C, often colder in winter wave
- Transponder, Class A operations require it; ATC clearance required for Class A
- Barograph / flight recorder, for badge attempts
- Specific training, wave is an advanced discipline; don't take a student into wave on a first try
XI.Performance Maneuvers F(at least one Task)
Refs: AIH; GFH.
What's the PTS standard for a steep turn?
- Two 360° turns in opposite directions
- Bank 45° ±5°
- Airspeed ±5 kt
- Rollout on entry heading ±10°
What's the load factor at 45° bank, and how does it affect stall speed?
- Load factor at 45° = 1.41 G
- Stall speed increases as √(load factor) → ~1.19× normal VS (Stall Speed)
- For Blanik with VS (Stall Speed) = 32 kt → ~38 kt at 45° bank
- Approach airspeed for the maneuver should provide margin above this
What's overbanking tendency, and how do you counter it?
- In steep turns, the outside wing travels faster, generates more lift → wants to bank further
- Counter with slight opposite aileron (out of the turn) to maintain bank angle
- Common error: pilot continues into turn, bank steepens past PTS limit, stall margin shrinks fast
What's the difference between a spiral dive and a spin?
- Spiral dive, wings unstalled, airspeed increasing rapidly, descending in a steep banked turn
- Spin, wings stalled, lower airspeed (steady), autorotation
- Recovery is opposite: spiral needs roll-out FIRST then pitch up; spin needs unstall FIRST then roll-out
- Misidentifying one for the other can be fatal
Walk me through spiral dive recovery.
- Reduce bank with coordinated aileron + rudder to wings level
- If applicable, deploy spoilers to control airspeed
- Gently raise the nose to level flight, DO NOT pull abruptly (high G + risk of overstress)
- Verify airspeed is below VNE (Never Exceed Speed) throughout
What's the danger of delayed recovery from a spiral?
- Airspeed builds rapidly toward VNE (Never Exceed Speed) (133 kt in Blanik)
- Risk of structural failure if VNE (Never Exceed Speed) exceeded, especially in turbulence
- Altitude loss can be severe, 500 to1,000 ft per quarter turn
- Hard pull-out during high-speed dive can exceed limit load (+5.3 G in Blanik)
XII.Slow Flight, Stalls, and Spins F(at least one Task; C waived for ASE add-on with logged spin instruction)
Refs: 14 CFR part 23; AIH; GFH; GFM.
What's "minimum controllable airspeed" in a glider?
- An airspeed that any further reduction or increase in AOA would result in an immediate stall
- Approximately 1.05 × VS (Stall Speed)
- Used to demonstrate flight characteristics near the stall, build awareness of cues
What are the characteristics of a glider in slow flight?
- Mushy controls, large stick movement for small response
- High deck angle, high AOA
- Aileron less effective; rudder more important for keeping wings level
- Adverse yaw very pronounced
- Any sudden pitch input or banking turn can stall
What's the technique for raising a wing without stalling in slow flight?
- Use rudder to lift the low wing, opposite rudder yaws the nose, lifts the down-going wing
- Aileron at high AOA can stall the wing further → spin entry
- Once recovered to wings level, gently lower nose to recover airspeed
What are the indications of an imminent stall?
- Decreasing airspeed (if you're watching it)
- High pitch attitude
- Reduced control effectiveness, mushy stick
- Buffet, aerodynamic shake on wing or stabilizer
- Stall warning device if equipped (most US glider trainers don't have one)
- For the candidate: feel + sound + visual all at once
Walk me through the stall recovery procedure.
- Reduce AOA, push the nose down decisively (not violently)
- Level the wings with coordinated aileron + rudder
- Recover to level flight; do not exceed VNE (Never Exceed Speed)
- Minimum altitude loss is the goal, not zero
- For glider: no power available, so AOA-reduction is the only tool
What's the PTS minimum altitude for stall recovery?
- Entry altitude must allow recovery no lower than 1,500 ft AGL
- Turning stalls at bank 15° ±5°
- Recover at first buffet or rapid decay of control effectiveness
What's an accelerated stall and when does it happen?
- Stall at higher-than-1G load, happens in steep turns, abrupt pull-up, recovery from dive
- VS (Stall Speed) increases with load factor: at 60° bank, VS is √2 × normal stall speed
- Common scenario: low base-to-final turn, pilot pulls back to "save" the turn → accelerated stall + spin
What's the secondary stall, and how do you avoid it?
- A second stall occurring during recovery from the first, usually because pilot pulled out too aggressively
- Avoid by reducing AOA decisively but smoothly, then gradually pitching up only after airspeed recovers
- Recognize a secondary stall by repeat buffet during what should be the recovery
What is a spin and what causes it?
- An aggravated stall combined with yaw → autorotation
- One wing more stalled than the other; the more-stalled wing drops, drag asymmetry sustains rotation
- Both wings stalled, but one is producing more lift than the other (post-stall) → spin entry
- Two ingredients required: stall + yaw. Eliminate either and you can't spin.
Walk me through the standard spin recovery.
- P, Power (n/a in glider); set propulsion to idle if motorglider
- A, Ailerons neutral
- R, Rudder OPPOSITE the spin direction, briskly to the stop
- E, Elevator forward to break the stall (the moment rotation stops, neutralize)
- As rotation stops: rudder neutral, gradually pull out of dive
- This is "PARE", universal sequence; verify GFM specifics for the type
What's the difference between an incipient spin and a fully developed spin?
- Incipient, first ¼ to ½ turn; rotation building, glider not yet stable in spin
- Fully developed, typically 2nd turn onward; stable rotation, fixed pitch, RPM steady
- Recovery from incipient is much easier, same procedure but fewer turns to recover
- Most unintentional accidental spins are incipient, recognized + recovered quickly
Which gliders are approved for spins, and where do you find that?
- Check the Type Certificate Data Sheet (TCDS) and the GFM for approved maneuvers
- Aerobatic-category gliders typically approved; Utility category may have spin restrictions
- Blanik L-23, approved for intentional spins per GFM; recovery within ~1 turn from incipient with standard PARE
- Never spin a glider not certificated for spins, recovery is not guaranteed
How do you teach spin awareness without inducing fear?
- Brief thoroughly on the ground, model gliders, diagrams, video
- Demo first; let the student experience the rotation as a passenger
- Walk them through recovery with you on controls; gradually transfer authority
- Reinforce that recovery is procedural and the airplane is approved, anxiety drops with familiarity
- Stop training if anxiety produces reactive behavior; reschedule
XIII.Emergency Operations F(at least one Task)
Refs: AIH; GFH; GFM.
What's your decision-making sequence when the lift dies and you're losing altitude away from the field?
- Best L/D speed, first action; preserves glide range
- Identify landable areas, at least three, ranked by suitability
- Commit to one by 1,500 AGL, circle, evaluate, pick
- Pattern at 800 AGL, abbreviated; prioritize landing safely over polished pattern
- By 200 AGL, committed; no field changes
How do you estimate wind direction without an instrument?
- Smoke from chimneys / fires
- Dust raised by wind
- Movement of clouds, especially low ones
- Water surface ripples, wind blows toward calm, ripples downwind
- Cattle / animals usually face into wind
- Ground tracking yourself: drift across a known feature
What's the rule for evaluating an unfamiliar field for landing?
- Size, at least 1,000 ft of usable length plus margin
- Surface, smooth, firm; avoid plowed, recently planted, high crops
- Slope, uphill if possible; never downhill in tailwind
- Surroundings, clear approach; avoid wires, fences, trees in the approach corridor
- Stock / structures, livestock, irrigation pivots, posts
- Surface wind, head- or quartering-headwind direction
A student is committed to a field but you see a fence they didn't. What do you do?
- Take controls if safety requires it, instructor's authority and obligation
- Call out the obstacle; if a side-step or sideslip can avoid, coach the student through it
- If the field is unsafe, transition to the next-best alternate if energy permits
- Debrief on the ground: what did the student see, what did they miss, what's the learning
What survival equipment should be carried on a cross-country glider flight?
- Water, at least 1 quart per person
- Cell phone + portable radio (charged)
- Personal locator beacon (PLB) or 406 ELT
- First aid kit; signal mirror; whistle
- Climate-appropriate: warm clothes for wave / mountain ops; sun protection in desert / coastal
- Documents: pilot license, ID, medical (n/a for glider but useful)
If parachutes are worn, what does the FAA require?
- Required when intentional maneuvers exceeding 60° bank or 30° pitch are conducted with passengers (§91.307)
- Parachute must be packed within preceding 180 days by appropriately rated rigger
- For training to / from a CFI candidate: parachutes are not required, but typically worn for spin training and aerobatic maneuvers
- Brief the bailout procedure: jettison canopy, release straps, push out, count, pull
When does an ELT have to be installed and operating in a glider?
- Most general-aviation aircraft must have an ELT, but gliders are explicitly excepted from the ELT requirement
- If an ELT is installed in a glider, it must be operational and inspected per Part 91
- For cross-country, a portable PLB is good practice even though not required
XIV.Postflight Procedures F
Ref: AIH; GFH; GFM.
What's the procedure after touchdown and rollout?
- Maintain directional control; aileron progressively into wind
- Apply wheel brake smoothly to stop in designated point
- Once stopped: clear the runway / landing area as soon as practical
- For self-launch: shut down engine per GFM cooling schedule
- For pure glider: wing-walker support, push to parking
What's the post-flight inspection looking for?
- Damage from the flight: dings, dents, bug strikes, control freedom
- Hard-landing indicators: cracked skin near gear, deformed gear strut
- Loose or popped fasteners
- Tire condition; brake function
- Make a pirep-style note of anything for the next pilot
How do you secure a glider for parking outside overnight?
- Tie down all three points (wings + tail), facing into the prevailing wind
- Lock control surfaces (control lock, or aileron / elevator gust lock)
- Cover canopy and pitot if available
- Chock or block the wheel
- If thunderstorms forecast, disassemble and store in trailer or hangar
What logbook entries are required after the flight, both for student and CFI?
- Student logs: date, makes / model, ID, total time, type of training, conditions
- CFI signs the entry; lists training given; cert # + expiration
- Aircraft maintenance log if anything unusual occurred (rough landing, suspected damage)
- Squawks should be entered formally so the next pilot knows
+Privileges, Limitations, Renewal (§§61.193, 61.195, 61.197)
Ref: 14 CFR Part 61 Subpart H.
What can a CFI-G provide instruction for?
- Student pilot certificate
- Pilot certificate (private through ATP, glider category)
- Flight instructor certificate (additional ratings)
- Ground instructor certificate
- Aircraft rating (within glider category)
- Practical-test recommendation
- Flight review (§61.56)
- Recurrent training
Can a CFI-G endorse a power pilot for a glider add-on?
- Yes, CFI-G can train and endorse a candidate for a glider add-on rating
- The candidate must meet all glider rating requirements (training, knowledge, practical test)
- Training given must be logged in the student's logbook with CFI signature
How many hours of instruction can a CFI give in 24 consecutive hours?
- 8 hours in 24 consecutive hours
- This is a hard regulatory limit, not a guideline
- Exceeding it invalidates any endorsements made during the over-limit period
What's the additional-rating requirement before instructing in a different category / class?
- To give instruction toward a particular rating, CFI must hold that rating themselves AND the appropriate flight-instructor rating
- For glider: CFI-G must hold a private (or higher) glider rating
- To get a CFI-G add-on, you need at least 15 hours PIC in glider, plus the standard flight-instructor knowledge and practical tests
What ground-and-flight currency rule applies to CFIs themselves before they can instruct?
- CFI must be a current pilot in the category being instructed (per §61.56 flight review)
- CFI cert is renewed every 24 calendar months, not currency-based, but stays valid only with renewal
- CFI may not endorse for a rating they themselves don't hold and aren't instructor-rated for
Can a CFI sign their own logbook for instruction received?
- No, instruction received must be signed by another CFI
- The student's logbook is the student's responsibility; CFI signs only the entries for instruction they personally gave
- The CFI may sign their own logbook for PIC time, dual given, etc., but not for instruction received
When does a CFI certificate expire and what are the renewal options?
- Expires 24 calendar months from the month of issuance or last renewal
- Renewal options under §61.197(a):
- Pass a practical test for the existing or additional CFI rating
- Present satisfactory recommendations as listed in (a)(2):
- Activity record showing 5 students passing practical tests in the prior 24 months
- Currently employed as a Part 121/135 check airman
- FAA-approved 16-hour Flight Instructor Refresher Course (FIRC)
- Other listed equivalents
What happens if a CFI lets the certificate expire without renewing?
- Cannot exercise instructor privileges until renewed or reinstated
- An expired CFI may complete a FIRC within 3 calendar months before or after expiration to reinstate
- Beyond that window, reinstatement requires a practical test under §61.199
- The underlying pilot certificate is unaffected, only the CFI-rating expires
Walk me through the activity-record path to renewal.
- Endorsed at least 5 applicants for a practical test in the preceding 24 calendar months
- AND at least 80% of those applicants passed the test on the first attempt
- Records include student names, certificate numbers, date of practical test, examiner
- Submit to FSDO with renewal application
- Both conditions must be met; failed first-attempts count against the 80% rate
