NTSB Identification: DCA67A0005
14 CFR Part 121 Scheduled operation of LAKE CENTRAL AIRLINES INC
Aircraft: CONVAIR 340, registration: N73130

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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1-0001   67/3/5  NR.MARSEILLES,OHIO    CONVAIR 340         CR-  3  0  0  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 2007                    N73130              PX- 35  0  0                            45, 22425 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            403 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        OPERATOR - LAKE CENTRAL AIRLINES,INC.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       IN FLIGHT: NORMAL CRUISE
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: HYDRAULIC PITCH CONTROL MECHANISM
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           MISCELLANEOUS ACTS,CONDITIONS - RPM-UNCONTROLLABLE-OVERSPEED
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- RT PROPELLER FAILED DUE TO OMISSION OF THE TORQUE PISTON NITRIDING PROCESS DURING MANUFACTURE.

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