Primary finding
Probable cause
An inadequate service bulletin which did not require measurement of the cyclic trim assembly shaft and did not identify all helicopters in which shaft wear could lead to restricted movement of the lateral cyclic trim.
Back to Search
NTSB investigation record
ATL98IA039
CompletedRobinson R-44· N972SA
- Date
- January 23, 1998
- Location
- Miami, FL
- Conditions
- VMC
- Record
- Completed
Continue research
Find similar accidents
Continue with the strongest shared characteristics.