I’m not sure if this is still common practice or not, but why are/were plane instruments noted in their final positions when investigating an accident?
Would these dials not be tossed around like crazy during an accident? How do investigators know the dials are in their final positions from reading the information and didn’t just land in those positions during the accident? Do the instruments not move around more than I think?
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The flight recorder is a hardened box that contains a digital record of the electrical signals relating to the flight controls, the audio in the aircraft cabin and other sensors that the aircraft uses.
Modern commercial aircraft use electronic controls to operate the control surfaces of the aircraft. The signal sent and the position recorded of the surfaces are stored on the recorder.
The data can be used to determine what were the conditions of the instruments, the control surfaces and any cockpit conversations that occurred.
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