Question 2
Domain 1: FAA Part 107 OperationsWhen operating within 400 feet of a structure, what altitude is permitted under Part 107?
Correct answer: B
Explanation
Part 107 allows a remote pilot to fly “400 feet above ground level” and, when operating near a structure, up to “400 feet above the structure” if that is higher. This rule lets the aircraft stay within the permitted altitude envelope while working around tall buildings or towers.
Why each option is right or wrong
A. Only up to the height of the structure
B. 400 feet above ground level or 400 feet above the structure, whichever is higher
14 C.F.R. § 107.51(b) permits a small unmanned aircraft to operate no higher than 400 feet above ground level, but when it is within a 400-foot horizontal radius of a structure, the ceiling is measured as 400 feet above that structure if that yields a higher permissible altitude. In practical terms, a drone beside a 300-foot building may fly up to 700 feet AGL, because the regulation uses the higher of the two reference points.
C. Unlimited altitude as long as within 400 feet horizontally
D. Only up to 400 feet total