Performance of a helicopter can be determined by
A
knowing the density altitude, gross weight, and surface wind.✓ Correct Answer
B
the formula pi times the rotor diameter divided by the blade area.
C
the highest altitude that can be maintained in a hover following liftoff.
Explanation
The Helicopter Flying Handbook identifies density altitude, gross weight and wind as the main factors affecting helicopter performance, and performance charts use them. The formula option is meaningless, and hover ceiling is one result of performance, not how it is determined.
Related helicopter questions
Keep practising
Study more FAA Flight Instructor questions, or take a timed practice quiz.