NTSB Identification: FTW82DA029
14 CFR Part 135 Nonscheduled operation of PETROLEUM HELI
Aircraft: BELL 206L-1, registration: N57494

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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3-3277   81/12/5   GULF OF MEXICO      BELL 206L-1         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 45, 5640
        TIME - 1438                    N57494              PX-  0  0  3  AIR TAXI-PASSG            TOTAL HOURS, 940 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          WEST DELTA 86 RIG           SOUTH PASS 89 RIG
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: DESCENDING
           ROLL OVER                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE INDICATING EQUIPMENT: TACHOMETER
           MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - SHEARED
           PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER EMERGENCY PROCEDURES
           ROTORCRAFT - MISCELLANEOUS UNITS AND ASSEMBLIES: EMERGENCY FLOTATION GEAR
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH WATER
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON WATER
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- TACH GEN COUPLING SHAFT SHEARED. BEARING FAILURE. EMERG FLOAT SEPARATED AT IMPACT.

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