FAR 61.31 Endorsements: How Flight Schools Track Complex, High-Performance, Tailwheel, and High-Altitude Training

A renter shows up Saturday morning to fly the school's 182RG. The dispatcher asks for the complex endorsement. The renter opens a logbook with a 172 checkout from three years ago, a flight review six months out, and no sign of a 61.31(e) endorsement anywhere. The instructor who did the original checkout left for the airlines two months earlier. The renter swears the endorsement was written. The aircraft stays on the ramp until somebody can prove otherwise.

That is what FAR 61.31 looks like when the school treats the endorsement as the renter's paperwork instead of the school's. The training did happen. The signature did get written. It just never made it into a system the dispatcher can query at 0700 on a Saturday.

What FAR 61.31 Actually Requires

14 CFR 61.31 sets out the additional training and endorsement requirements for specific kinds of airplanes. A pilot can hold a current private certificate, a current medical, and a current flight review, and still be unqualified to act as PIC of a particular airplane until they meet 61.31. The rule covers complex airplanes, high-performance airplanes, tailwheel airplanes, pressurized airplanes capable of operating above 25,000 feet, and aircraft requiring a type rating.

Each subsection works the same way. The pilot receives ground and flight training from an authorized instructor, the instructor finds them proficient, and the instructor writes a one-time logbook endorsement. The endorsement is permanent. It does not expire and does not recur. It does have to specify the right airplane category, and it has to actually exist somewhere a future dispatcher can find it.

Complex Airplanes

A complex airplane under 61.31(e) is one with retractable landing gear, flaps, and a controllable-pitch propeller, or a single-power-lever airplane on the turbine side. The Cessna 182RG, the Piper Arrow, and the Mooney M20 are the schoolhouse examples. The endorsement authorizes the pilot to act as PIC in any complex airplane, not just the one they trained in, which is a frequent source of confusion for renters who think the endorsement is tied to a specific tail number.

Training has to cover both ground and flight. The ground portion addresses gear, prop, and flap operating procedures, V-speeds peculiar to the airplane category, and the systems knowledge a complex airplane needs. The flight portion has to show the instructor that the pilot can manage the additional controls under realistic conditions, including a gear-up emergency brief.

High-Performance Airplanes

A high-performance airplane under 61.31(f) is one with an engine of more than 200 horsepower. The C182, the C206, and most of the rear-loading Cessna line live here, along with the Piper Saratoga and the Beechcraft Bonanza. The endorsement and the complex endorsement are independent. A Mooney with a 200hp engine is complex but not high-performance. A Cessna 206 is high-performance but not complex. A pilot moving up through the fleet picks up each endorsement separately.

Ground training covers power management, mixture control at higher power settings, engine cooling discipline on descent, and the cruise procedures the airplane category actually flies. The flight training shows the instructor the pilot can fly the engine without scoring a cylinder.

Tailwheel Airplanes

The tailwheel endorsement under 61.31(i) applies to any airplane with the third wheel in the back. Training covers normal and crosswind takeoffs and landings, wheel landings unless the manufacturer recommends otherwise, and go-arounds. The endorsement is also category-wide once written. A pilot endorsed in a Citabria is endorsed for any single-engine tailwheel airplane.

The common flight school version of this endorsement is the Decathlon or Super Cub the school keeps as a single specialty aircraft. It matters operationally because the aircraft checkout for that airplane is going to include the 61.31(i) training whether the school markets it that way or not, and the endorsement has to be captured separately from the make-and-model checkout signoff.

Pressurized Airplanes Above 25,000 Feet

The high-altitude endorsement under 61.31(g) applies to pressurized airplanes with a service ceiling or maximum operating altitude above 25,000 feet MSL. Most primary flight schools never touch this. The ones running a Cessna 421 for commercial training or a King Air for a turbine course do, and the endorsement has both a ground portion covering high-altitude aerodynamics, decompression, and oxygen physiology, and a flight portion in a pressurized airplane.

What the Endorsement Has to Say

The legal weight is in the underlying regulation, but AC 61-65J gives the instructor templates that meet the requirement on a single logbook page. A 61.31 endorsement that does not name the airplane category (complex, high-performance, tailwheel, high-altitude) does not authorize what the renter thinks it does. A complex endorsement written as "completed Arrow checkout, proficient" is not a 61.31(e) endorsement. It is a make-and-model note that an examiner or an inspector will read as exactly that.

The AC 61-65J PDF also closes the second common gap: instructor credentials. The endorsement records the instructor's printed name, certificate number, expiration, and signature. A school that uses the templates verbatim avoids both gaps without having to think about it.

Why the School Owns the Tracking, Not the Renter

A pilot who carries a paper logbook can lose the page that has the endorsement on it. A pilot who switches to a digital logbook can lose track of which entry the endorsement lives in. A school that relies on the renter to produce the endorsement at every checkout discovers, eventually, that the endorsement is gone and the training has to be repeated to put the airplane back in the air.

The fix is to capture a copy at the moment the endorsement is written. A photo of the logbook page, scanned into the renter's training file, tied to the dispatch record that triggered the training. The endorsement still lives in the pilot's logbook where it legally has to, and the school holds a copy that no future logbook mishap can erase. The same record-keeping discipline that keeps logged flight time defensible applies here.

Make Dispatch Honor the Endorsement

The reliable failure mode is a dispatcher releasing an airplane to a pilot whose 61.31 endorsement was never captured. The renter is current, the medical is good, the flight review is in date, and the airplane is open. Everything the dispatch system tracks says go. The one thing the dispatch system does not track is whether the renter is qualified for this category of airplane.

A modern scheduling platform like HangarOS treats the 61.31 endorsements as structured fields on the pilot record, the same way it treats medical date and flight review. An airplane that is complex, high-performance, tailwheel, or high-altitude carries the category requirement on the aircraft record. The booking only releases when the pilot's record carries the matching endorsement. The renter shows up Saturday morning, the keys come out, and nobody has to chase a paper trail.

A 61.31 endorsement the school can read on demand is the endorsement that does not strand a renter on the ramp.