The expression "primary flight control" applies to the: 1: elevator.2: speed brake.3: lift-augmentation devices.4: roll spoiler.The combination that regroups all of the correct statements is:
Domanda 4, Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license
| 1, 4. |
| 2, 3. |
| 2, 4. |
| 1, 2, 3, 4. |
