NTSB Identification: CHI85IA369.
The docket is stored on NTSB microfiche number 29676.
Scheduled 14 CFR operation of MIDSTATE AIRLINES, INC.
Incident occurred Monday, September 09, 1985 in CHICAGO, IL
Aircraft: FOKKER F27-500, registration: N242MA
Injuries: 32 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

AT ABOUT THE TIME FULL POWER WAS OBTAINED THE HEARD A LOUD BANG FOLLOWED BY A FIRE WARNING FOR THE LEFT ENGINE. THE TAKEOFF WAS ABORTED AND THE CREW SHUT DOWN THE ENGINE. THE PASSENGERS WERE DEPLANED ON THE TAXIWAY AFTER IT WAS DETERMINED THE FIRE WAS OUT & THERE WAS NO MORE DANGER. EXAMINATION OF THE ENGINE REVEALED THAT THE LOW PRESSURE IMPELLER FAILED IN A HIGH CYCLE FATIGUE MODE.

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

COMPRESSOR ASSEMBLY,IMPELLER..FAILURE,TOTAL

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

COMPRESSOR ASSEMBLY,IMPELLER..FATIGUE

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