NTSB Identification: MIA82FA051
Scheduled 14 CFR operation of PAN AMERICAN WORLD AIRWAYS, IN
Accident occurred Wednesday, February 17, 1982 in MIAMI, FL
Probable Cause Approval Date: 02/17/1983
Aircraft: BOEING 727-235, registration: N4734
Injuries: 1 Serious,1 Minor,51 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

DURING TAKEOFF ROLL A LOUD BANG WAS HEARD & THE TAKEOFF ABORTED. THE TOWER ADVISED THE FLT OF EXTENSIVE FIRE IN THE TAILAREA. THE PLT CLEARED THE ACTIVE RWY & THE ACFT WAS EVACUATED. 1 PAX SUFFERED A FRACTURED ANKLE & ANOTHER A SPRAINED ANKLE. AN EXPLOSION HAD OCCURRED IN THE #2 ENG DUE TO A FAILED FRONT COMPRESSOR FRONT HUB. THE MAIN FUEL SUPPLY LINE TO THE #2 ENG WAS SEVERED CAUSING THE FIRE. METALLURGICAL EXAMINATION REVEALED THAT THE HUB FRACTURED RADIALLY THROUGH THE BORE & RIM IN TWO LOCATIONS RELEASING TWO SECTIONS. FATIGUE HAD ORIGINATED AT A NONCONFORMING CIRCUMFERENTIAL GROOVE AT THE REAR OF ONE TIE ROD HOLE. THE SURFACE OF THE GROOVE EXHIBITED A VERY ROUGH, SMEARED APPEARANCE & THERE WERE NUMEROUS AXIAL CRACKS.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

COMPRESSOR ASSEMBLY..FATIGUE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

COMPRESSOR ASSEMBLY..FAILURE,TOTAL


Contributing Factors

INADEQUATE QUALITY CONTROL..MANUFACTURER

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