Cause findings

Not a complete record. A partial collection of documented occurrences: counts, not rates, and no measure of aviation risk. Coverage

83 of 183,362 records: 1 more filter, leaving out 4 unreviewed and minor records. Include them · Show all 183,362

80 occurrences have findings that the NTSB designated as a cause. These are the most common areas of those findings; an occurrence can have causes in several areas. Share is of occurrences with cause findings.

Cause areas
Cause area	Occurrences	Share	Fatal occurrences	Fatalities
Reason for occurrence undetermined	Reason for occurrence undetermined: 8 occurrences, 10.0% of occurrences with cause findings. 3 were fatal. The bar is scaled to the largest row.	10.0%	3	4
Personnel issues › Task performance	Personnel issues › Task performance: 7 occurrences, 8.8% of occurrences with cause findings. 4 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	8.8%	4	6
Aircraft › Aircraft oper/perf/capability	Aircraft › Aircraft oper/perf/capability: 5 occurrences, 6.3% of occurrences with cause findings. 3 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	6.3%	3	4
Personnel issues › Action/decision	Personnel issues › Action/decision: 5 occurrences, 6.3% of occurrences with cause findings. 1 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	6.3%	1	1
Aircraft › Aircraft systems	Aircraft › Aircraft systems: 3 occurrences, 3.8% of occurrences with cause findings. 0 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	3.8%	0	0
Environmental issues › Conditions/weather/phenomena	Environmental issues › Conditions/weather/phenomena: 3 occurrences, 3.8% of occurrences with cause findings. 0 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	3.8%	0	0
Pilot in command › In-flight planning/decision, improper	Pilot in command › In-flight planning/decision, improper: 3 occurrences, 3.8% of occurrences with cause findings. 1 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	3.8%	1	3
Weather condition › Turbulence, clear air	Weather condition › Turbulence, clear air: 3 occurrences, 3.8% of occurrences with cause findings. 0 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	3.8%	0	0
Aircraft › Aircraft handling/service	Aircraft › Aircraft handling/service: 2 occurrences, 2.5% of occurrences with cause findings. 1 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	2.5%	1	1
Other maintenance personnel › Maintenance, overhaul, improper	Other maintenance personnel › Maintenance, overhaul, improper: 2 occurrences, 2.5% of occurrences with cause findings. 0 were fatal. The bar is scaled to the largest row (Reason for occurrence undetermined, 8).	2.5%	0	0

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