Der "impossible turn" war lange Zeit ein absolutes no-no.
2018 hat die FAA überraschend ihre Meinung geändert und dieses Advisory Circular veröffentlicht, welches sich an die Fluglehrer richtet:
https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_61-83J.pdf
Zitat:
"A.11.4
Return to Field/Engine Failure on Takeoff.
Flight instructors should demonstrate and teach trainees when and how to make a safe 180-degree turnback to the field after an engine failure. Instructors should also train pilots of single-engine airplanes not to make an emergency 180-degree turnback to the field after a failure unless altitude, best glide requirements, and pilot skill allow for a safe return. This emergency procedure training should occur at a safe altitude and should only be taught as a simulated engine-out exercise. A critical part of conducting this training is for the flight instructor to be fully aware of the need for diligence, the need to perform this maneuver properly, and the need to avoid any potential for an accelerated stall in the turn. The flight instructor should demonstrate the proper use of pitch and bank control to reduce load factor and lower the stall speed during the turn. After completing this demonstration, the flight instructor should allow the trainee to practice this procedure under the flight instructor's supervision. Flight instructors should also teach the typical altitude loss for the given make and model flown during a 180-degree turn, while also teaching the pilot how to make a safe, coordinated turn with a sufficient bank. These elements should give the pilot the ability to determine quickly whether a turnback will have a successful outcome. During the before-takeoff check, the expected loss of altitude in a turnback, plus a sufficient safety factor, should be briefed and related to the altitude at which this maneuver can be conducted safely. In addition, the effect of existing winds on the preferred direction and the viability of a turnback should be considered as part of the briefing."
Ich habe dies vor einigen Jahren mal in einem SEP-Simulator geübt und mir danach ein Gate von 1000' gesetzt.
