ATPL: In An Air Data Computer (ADC), aeroplane altitude is calculated from:
Domanda 114, Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot license
| Measurement of outside air temperature (OAT) |
| The difference between absolute and dynamic pressure at the fuselage |
| Measurement of elapsed time for a radio signal transmitted to the ground surface and back |
| Measurement of absolute barometric pressure from a static source on the fuselage |
