NTSB Identification: ANC76AA112
14 CFR Part 91 General Aviation
Aircraft: BELL 47G3B1, registration: N7901S
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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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3-3890  76/7/17    PETERSBURG,AK       BELL 47G3B1         CR-  1  0  0  NONCOMMERCIAL             COMMERCIAL, AGE 29, 3700
        TIME - UNK/NR                  N7901S              PX-  1  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 600 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BIG JOHN BAY,AK             PETERSBURG,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: TAIL ROTOR                      IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - ROTOR ASSEMBLIES: TAIL ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
         FIRE AFTER IMPACT
        REMARKS- T/R BLADES 22.1HRS PAST MANDATORY CHANGE TIME.
Full narrative is not available


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