Question 14
Domain 6: FAA Part 107 PerformanceWhich factor does NOT contribute to increased density altitude?
Correct answer: D
Explanation
Density altitude increases when air becomes less dense, which happens with higher temperature, higher humidity, and lower pressure. Low ambient temperature makes air denser, so it does not raise density altitude and instead lowers it.
Why each option is right or wrong
A. High ambient temperature
B. High humidity
C. Low atmospheric pressure
D. Low ambient temperature
Under the standard atmosphere relationship used in aviation performance calculations, density altitude rises when pressure altitude is increased by warmer-than-standard air, lower pressure, or added moisture; the FAA’s Pilot’s Handbook of Aeronautical Knowledge explains that higher temperature and humidity reduce air density, while colder air increases it. A low ambient temperature therefore moves density altitude downward rather than upward, so it is the one factor here that does not contribute to an increase.