NTSB Identification: LAX80FA093
14 CFR Part 91 General Aviation
Aircraft: ROBINSON R22, registration: N9011M

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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3-3788   80/5/3    RNCH PALOS VRD,CA   ROBINSON R22        CR-  2  0  0  INSTRUCTIONAL             ATP,FLIGHT INSTR., AGE
        TIME - 1105                    N9011M              PX-  0  0  0  DUAL                      30, 2198 TOTAL HOURS, 38
                                       DAMAGE-DESTROYED    OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          TORRANCE,CA                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: DESCENDING
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER EMERGENCY PROCEDURES
        FACTOR(S)
           PERSONNEL - RULES,REGULATIONS,STANDARDS PERSONNEL
        REMARKS- DELAMINATION OF BLADES.BLADES REPAIRED BY MFGR 1/30/80 & 5/1/80.NON-SURVEILLANCE OF MANUFACTURING.

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