What is the minimum age requirement for an applicant seeking a student pilot certificate limited to glider operations?

14 years. Under 14 CFR 61.83, a student pilot applicant must be at least 16 years old, or at least 14 years old when seeking a certificate limited to glider or balloon operations. No medical certificate is required for glider operations.

A glider's towrope breaks at 120 feet AGL during an aerotow, with no usable runway remaining ahead. According to the Glider Flying Handbook, what should the pilot do?

Land ahead in the best available area without attempting to turn back.. The Glider Flying Handbook says that when a tow failure occurs with neither enough runway ahead nor enough altitude (typically about 200 feet AGL) to turn back safely, the pilot should land ahead. Turning at low altitude invites a stall-spin, and a glider cannot climb without lift.

How does the pilot of a powered parachute normally make the aircraft climb?

Increase engine power; the nose rises and the powered parachute climbs at nearly constant airspeed.. A powered parachute flies at a nearly constant airspeed. The throttle controls pitch and altitude: more power raises the nose and produces a climb, and less power produces a descent. The steering controls turn the aircraft or, applied together, flare it for landing. Control bar inputs belong to weight-shift-control aircraft.

What will result from adding more oil to the fuel than the manufacturer specifies for a premix two-stroke engine?

Spark plug fouling and carbon buildup. Too much oil in the fuel leaves deposits that foul spark plugs and build carbon in the combustion chamber and exhaust, reducing power. Too little oil causes poor lubrication and possible seizure, and a lean mixture or air leak raises exhaust gas temperature.

Gliders, Powered Parachutes & Weight-Shift-C | Free Guide 2026

Key Takeaways

A student pilot seeking glider or balloon privileges may be 14 years old, and glider operations require no medical certificate (14 CFR 61.83 and 61.23(b)).
Under 14 CFR 61.31(j), a glider pilot needs training and a logbook endorsement for each launch method used: ground tow, aerotow, or self-launch.
The Glider Flying Handbook advises landing ahead after a tow failure below about 200 feet AGL with no runway ahead, rather than turning back.
A powered parachute's airspeed is nearly constant; the pilot controls pitch and altitude with the throttle and turns with steering controls that deflect the wing's trailing edge.
Adding more oil to a two-stroke engine's fuel than specified fouls spark plugs and builds carbon, while too little oil or a lean mixture raises EGT and risks seizure.

Gliders, Powered Parachutes & Weight-Shift-Control Aircraft

The sport pilot knowledge areas (61.309) and the private and commercial areas apply to every category an AGI may teach, so the FAA's AGI sample questions include glider student-pilot rules, powered-parachute fuel systems, and two-stroke engines. References: the Glider Flying Handbook (FAA-H-8083-13), the Powered Parachute Flying Handbook (FAA-H-8083-29), and the Weight-Shift Control Aircraft Flying Handbook (FAA-H-8083-5).

Gliders

Certification Facts

A student pilot seeking glider privileges may be 14 years old (61.83); a private glider applicant must be 16.
No medical certificate is required to exercise glider privileges (61.23(b)).
Under 14 CFR 61.31(j), a pilot may not act as PIC of a glider using ground-tow, aerotow, or self-launch procedures without training in that method and a logbook endorsement for it.
For a flight review, a glider pilot may substitute three instructional flights, each to traffic pattern altitude, for the 1 hour of flight training (61.56(b)).
Gliders have the right-of-way over airships, powered parachutes, weight-shift-control aircraft, airplanes, and rotorcraft; only balloons outrank them (91.113(d)).

Launch Methods and the Aerotow

Launch Method	How It Works
Aerotow	A towplane pulls the glider on a rope to release altitude
Ground launch	A winch or automobile pulls the glider into a steep climb
Self-launch	A motorglider uses its own engine to climb, then shuts it down

On aerotow, the glider flies in the high-tow position (just above the towplane's wake) or the low-tow position (just below it), both outside the wake. Release is normally made from high tow; after release the glider turns right and the towplane turns left. Standard signals from the Glider Flying Handbook include the towplane rocking its wings, meaning the glider must release immediately, and the towplane waggling its rudder, meaning something is wrong with the glider (for example, spoilers or dive brakes open).

If the towline breaks or the glider releases early with neither enough runway ahead nor enough height to turn back, typically about 200 feet AGL, the pilot should land ahead. A low-altitude turn back is a classic stall-spin trap.

Soaring and Glider Performance

Lift sources: thermals (rising columns of warm air, often marked by cumulus), ridge lift (wind deflected up a slope), wave lift (standing waves downwind of mountains, sometimes marked by lenticular clouds, with dangerous rotor turbulence beneath), and convergence lines.
Performance polar: The minimum sink speed keeps the glider aloft longest; the best glide (L/D) speed covers the most distance in still air.
Speed to fly: Fly faster than best L/D in sinking air and into a headwind to cross it quickly and preserve glide distance; fly slower in lift.
Water ballast: Raising wing loading keeps the same best glide ratio but at a higher speed, useful on strong soaring days.

Powered Parachutes (PPC)

A powered parachute hangs a cart with an engine and propeller beneath a ram-air parachute wing.

Airspeed is nearly constant. The wing flies at essentially one trim speed, so the pilot does not change airspeed the way an airplane pilot does.
Throttle controls pitch and altitude. More power raises the nose and produces a climb; less power produces a descent. The Powered Parachute Flying Handbook describes the controls as intuitive: push right to turn right, left to turn left, more throttle to go up, less to go down.
Steering controls (foot bars or hand controls) pull steering lines that deflect the wing's trailing edge on one side to turn. Applying both at once produces a flare for landing.
Takeoff: The wing is laid out behind the cart, inflated by the propeller blast and forward motion, and checked overhead and centered before takeoff power is added. Crosswind and gusts can collapse or "lock out" the wing, so powered parachutes are flown in light winds.

Weight-Shift-Control Aircraft (Trikes)

A weight-shift-control aircraft has a flexible wing on a pivot above a carriage. The pilot controls it through the control bar:

Pushing the control bar forward (out) raises the nose and slows the aircraft; pulling it back (in) lowers the nose and speeds it up. With no input, it returns to its trim speed.
Moving the bar to one side shifts the pilot's weight to the other side, which banks the wing toward the weight.
Throttle controls climb and descent at a given trim speed.
Whip stalls and tumbles are the unique hazard; many trikes carry a ballistic recovery parachute.

Two-Stroke Engines

Many powered parachutes, trikes, and light-sport aircraft use two-stroke engines. Instructors should stress:

Condition	Result
More oil in the fuel than specified (premix engines)	Spark plug fouling, carbon deposits, smoky exhaust, and reduced power
Less oil than specified	Poor lubrication, scoring, and possible piston seizure
Lean mixture or intake air leak	High exhaust gas and cylinder head temperatures, detonation, and seizure
Cold engine at high power	Piston seizure; warm up per the manufacturer

Because two-stroke engines fail more often than certificated aircraft engines, pilots of these aircraft should always stay within gliding distance of a suitable landing area.

FAA AGI Advanced Ground Instructor

10.2 Gliders, Powered Parachutes & Weight-Shift-Control Aircraft