ORIGINAL: togatoga
Agreed, most planes are rated to max t/o and ldg altitude due to expected performance shortfall in engine thrust and lift.Its called WAT. However, when comparing rpm figures its rather close wrt msl and at altitude.
What happens is a significant drop in thrust available even as the rpm remains the same.The engine cannot produce its flat rated power band above a specified altitude and temp.
Nice to see a post that relates to the subject of the thread. We've had plenty of thread drift.
CR