Final answer:
Thrust reverser limitations in aircraft engineering refer to the conditions under which engines can be operated in reverse thrust mode, with an inspection required if reverse thrust idle is exceeded below a specific airspeed (KCAS).
Step-by-step explanation:
In the context of aircraft engineering, thrust reverser limitations refer to the conditions under which the aircraft's engines can be operated in reverse thrust mode. If the aircraft exceeds idle reverse thrust below a certain indicated airspeed (KCAS), it necessitates an inspection of the engine and thrust reverser, as well as the completion of an AFTO Form 781A entry.