NTSB Identification: FTW89LA039.
The docket is stored on NTSB microfiche number 39123.
Accident occurred Monday, January 09, 1989 in S. TIMBALIER 75
Probable Cause Approval Date: 07/11/1990
Aircraft: BELL 206L-1, registration: N27555
Injuries: 1 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE HELICOPTER ROLLED OFF AN OFFSHORE PLATFORM INTO THE GULF OF MEXICO FOLLOWING A LOSS OF YAW CONTROL DURING AN ATTEMPTED PRECAUTIONARY LANDING. THE PRECAUTIONARY LANDING WAS EXECUTED AFTER THE PILOT EXPERIENCED LEFT AND RIGHT YAW AND FEEDBACK THROUGH THE TAIL ROTOR CONTROL PEDALS. THE TAIL ROTOR GEAR BOX AND DRIVE TRAIN SYSTEM WERE NOT RECOVERED AND THE CAUSE OF THE FLIGHT CONTROL MALFUNCTION COULD NOT BE DETERMINED.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

THE LOSS OF CONTROL OF THE HELICOPTER DUE TO AN UNDETERMINED FAILURE OF THE TAIL ROTOR CONTROL SYSTEM.

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