The flight crew shall operate the engine cooling for () with idle or near idle thrust before the engine is shut down to achieve thermal stability of the engine.
A.90s B.120s C.150s D.180s正确答案D
The flight crew shall operate the engine cooling for () with idle or near idle thrust before the engine is shut down to achieve thermal stability of the engine.
A.90s B.120s C.150s D.180s正确答案D
