NTSB Identification: IAD71II033
14 CFR Part 121 Scheduled operation of UNITED AIR LINES INC
Aircraft: BOEING 720, registration: N7207U

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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4-0002  71/1/12    BALTIMORE,MD        BOEING 720          CR-  0  0  7  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1857                    N7207U              PX-  0  0 57                            52, 21000 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0                            7600 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        OPERATOR - UNITED AIR LINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          BALTIMORE,MD                DENVER,COLO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           FIRE OR EXPLOSION: IN FLIGHT                             IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           POWERPLANT - COMPRESSOR ASSEMBLY: BLADE,COMPRESSOR ROTOR
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN ENGINE
        FACTOR(S)
           POWERPLANT - MISCELLANEOUS: FOREIGN OBJECT DAMAGE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- 8TH STAGE COMPRESSOR BLADE FAILED.CAUSED PROGRESSIVE NR 1 ENG FAILURE.FIRE BOTTLE INOP.LND SAFELY.

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