Home › Part 107 Practice Tests › Aviation Weather Questions › Question 38
How do high temperature, high altitude, and high humidity combine to affect a small drone?
- A.They raise density altitude, reduce lift and propeller efficiency, and degrade performance
- B.They lower density altitude and improve climb performance
- C.They have no effect because electric motors do not use air
Correct answer
A. They raise density altitude, reduce lift and propeller efficiency, and degrade performance
Why
Heat, elevation, and moisture all make air less dense. A small unmanned aircraft in those conditions needs more power, climbs more slowly, and may have reduced endurance.
Source: FAA-G-8082-22 Ch. 5 (Weather Effects) · ACS knowledge area: Aviation Weather Sources and Effects · From the Aviation Weather practice bank (WEA-038).