NTSB Identification: LAX81FA038
14 CFR Part 91 General Aviation
Aircraft: ROBINSON R22, registration: N9031Y

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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3-3502  81/1/21    LONG BEACH,CA       ROBINSON R22        CR-  0  0  2  INSTRUCTIONAL             ATP,FLIGHT INSTR., AGE
        TIME - 0904                    N9031Y              PX-  0  0  0  DUAL                      31, 1892 TOTAL HOURS, 181
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LONG BEACH
        DEPARTURE POINT             INTENDED DESTINATION
          LONG BEACH,CA               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        REMARKS- MN GEAR BOX INPUT FLEX CPLNG YOKE,A194,FAILED.CRACKS FND UNDER CADMIUM PLATING,DECARBURIZED ZONE.

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