There is a caveat to the Air France 447 crash, that the pilots apparently relied too heavily on the autopilot. When the alarms came on mid-flight, neither pilot

There is a caveat to the Air France 447 crash, that the pilots apparently relied too heavily on the autopilot. When the alarms came on mid-flight, neither pilot was familiar with the current state of the plane and found it more difficult to diagnose the problems. One of the recommendations to come out of that crash was that pilots on long flights should occasionally switch back to manual control to keep themselves synced with the aircraft's state.