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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On aircraft that do not have FDRs, they are sometimes able to tell where the instruments were **at the point of impact** because the needles on the instrument will slap the back of the instrument and can often leave a mark.
Once FDRs became commonplace this procedure was no longer really needed.
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