NTSB Identification: FTW70FPD05
14 CFR Part 91 General Aviation
Aircraft: BELL 47G, registration: N16657

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0548   70/3/5    FORT WORTH,TEX      BELL 47G            CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 0910                    N16657              PX-  0  0  0  DUAL                      AGE 52, 7000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            178 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - LUCK FIELD
        DEPARTURE POINT             INTENDED DESTINATION
          FORT WORTH,TEX              FORT WORTH,TEX
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: TAIL ROTOR                      IN FLIGHT: DESCENDING
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  PROP/ENGINE VIBRATION
                                  UNUSUAL NOISE
        REMARKS- SHEARED DELTA HINGE BOLT CAUSED FAILURE OF PITCH CONTROL BEARING.LOST T/R BLADE DUE TO VIBRATION.

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