NTSB Identification: FTW81IA096
14 CFR Part 135 Nonscheduled operation of PETROLEUM HELI
Aircraft: SIKORSKY S-76, registration: N1547D

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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5-0057  81/5/26    SS BLOCK 214,GM     SIKORSKY S-76       CR-  0  0  2  COMMERCIAL                COMMERCIAL, AGE 31, 4790
        TIME - 1708                    N1547D              PX-  0  0  6  AIR TAXI-PASSG            TOTAL HOURS, 277 IN TYPE,
                                       DAMAGE-MINOR        OT-  0  0  0                            INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - OIL RIG PLATFORM
        DEPARTURE POINT             INTENDED DESTINATION
          SS BLOCK 214,GM             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: VERTICAL
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
           POWERPLANT - TURBINE ASSEMBLY: SHROUD,RING
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           POWERPLANT - MISCELLANEOUS: FOREIGN OBJECT DAMAGE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - FAILURE OF TWO OR MORE ENGINES
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-2 ENGINES
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
         FIRE AFTER IMPACT
        REMARKS- THICKNESS,4TH STAGE TURB NZL LCTG RNG,BLO SPEC,FAIL FM FATIGUE.FRGMNTS FM OVRSPD TURB DMGD OTR ENG

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