NTSB Identification: OAK77DXQ30
14 CFR Part 135 Nonscheduled operation of PINEBELT HELIC
Aircraft: BELL 47G3B1, registration: N337RH

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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3-2174  77/7/31    RUBICON SPRING,CA   BELL 47G3B1         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 30, 2353
        TIME - 1000                    N337RH              PX-  0  0  2  AIR TAXI-PASSG            TOTAL HOURS, 224 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          RUBICON SPRING,CA           LOON LAKE,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: RUNNING
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - IGNITION SYSTEM: SPARK PLUG
           MISCELLANEOUS ACTS,CONDITIONS - CARBON DEPOSITS
           POWERPLANT - ENGINE STRUCTURE: CRANKCASE
           MISCELLANEOUS ACTS,CONDITIONS - LOW COMPRESSION
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      85
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
           90                                                       5
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- LEAD,OIL,AND CARBON FOULING.

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