The pilot may be prevented from retracting the landing gear whilst the aircraft is on the ground by:
Domanda 354, Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license
| A Guard On The Selector Switch Which Cannot Be Moved Until The Aircraft Is Airborne. |
| The electrical control system being routed through the weight on wheels switch. |
| A pneumatic interlock which disables the hydraulic up selector. |
| Any Attempt To Select The Landing Gear Up Will Result In A Flashing Warning Light And A Loud Horn. |
