I am looking through FAR Part 25 to solve a friendly dispute with a fellow pilot.
The FAR Part 25 turboprop aircraft has Auto Feather, however, I would like to know whether the second stage climb is predicated on an engine being feathered or not. The debate is whether, in the event of a non-feather, the dead engine should be feathered as soon as practicable or whether one should wait until after level off height.
FAR 25.111(4) only gives the following hint:
4) Except for gear retraction and propeller feathering, the airplane configuration may not be changed, and no change in power or thrust that requires action by the pilot may be made, until the airplane is 400 feet above the takeoff surface.
The big question is whether the performance will be available to meet second segment climb without feathering, based on the weights in our Performance book.
Anybody?