NTSB Identification: FTW81DA016
14 CFR Part 135 Nonscheduled operation of HORIZON HELICO
Aircraft: AEROSPATIAL AS-350, registration: N802DB

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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3-3736  80/12/13 NR.CAMERON,LA         AEROSPATIAL AS-350  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 31, 4817
        TIME - 0926                    N802DB              PX-  0  0  1  AIR TAXI-PASSG            TOTAL HOURS, 214 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CAMERON,LA                  HIGH ISLAND 571 RIG
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: NORMAL CRUISE
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: MAIN ROTOR GEAR BOX
           MISCELLANEOUS ACTS,CONDITIONS - DISCONNECTED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           AIRFRAME - LANDING GEAR: FLOAT ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: POOR/INADEQUATE DESIGN
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON WATER
                                  SUSPECTED MECHANICAL DISCREPANCY
                                  UNUSUAL NOISE
        REMARKS- LARGE HARDNESS DIFFERENCE FD BETWEEN MALE & FEMALE SPLINES.CAST ALUMINUM FLOAT BRCKT FAILED ON T/D

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