Accidents of Thinking (Frank Caron, Technical Soaring, V13 #3 71-75, July, 1999)

Process error Accidents Fatalities Injuries aircraft status 55 (23%) 7 (70%) 11 (28%) aircraft environment 64 (27%) 9 (23%) choice of procedure 54 (23%) 2 (20%) 10 (25 wrong routine 37 (16%) 1 (10%) 6 (15%) resource management 9 ( 4%) 1 (3%) wrong intentions 12 ( 5%) 3 (8%) violations 5 ( 2%) The top four errors amount to misinterpreting the situation and account for 89% of the accidents, 91% of the injuries, and all the fatalities. The top two account for half of accidents and injuries and 70% of the deaths: misinterpreting the A/C status or environs. Violations and "bad" intentions are a minor problem. Most accidents happen with good intentions!!!

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Notes:

The full text of each line at the top is
Errors in interpretation of aricraft status.
Errors in interpretation of the aircraft environment.
Wrong choice of procedure.
Wrong routine chosen
Inappropriate resource management.
Wrong intentions.
Violations of rules.