Fatal Accident Causes by Category (percent)

Cause

1950s

1960s

1970s

1980s

1990s+

All

 Pilot Error

42

33

26

29

30

32

 Pilot Error  (weather related)

9

18

16

17

20

16

 Pilot Error (mechanical related)

7

5

4

4

6

5

 Total Pilot Error

58

56

46

49

55

53

 Other Human Error

2

7

9

7

6

6

 Weather

15

10

12

14

9

12

 Mechanical Failure

20

20

21

19

20

20

 Sabotage

5

4

9

11

8

8

 Other Cause

0

3

3

1

1

1