Crashing

Event
Crashing occurs when your bomber is too damaged to fly. This occurs when a vital part, like a wing, breaks off, when all 4 engines are destroyed or inoperative, when the bomber runs out of fuel, or when there is no pilot present for too long. After collision with the ground occurs, the mission will end and survival will decide whether the surviving crew is rescued and added back to the crew.

Strategies
Strategies to avoid a crash include the following (Some of these are obvious)
 * Keeping a pilot in the cockpit at all times. It is a good idea to just never let the pilot out of his seat, unless it is a dire emergency and he is going to get killed soon, and must be put onto the medical bed.
 * Using lean fuel often to conserve fuel.
 * Putting out engine fires immediately and fixing engines quickly, when it is safe for an engineer to go out.
 * Never ever keep the bomb bay doors with bombs in it open or drop a bomb when there is a fighter underneath you