NTSB Identification: CHI87MA101.
The docket is stored on NTSB microfiche number 34765.
Scheduled 14 CFR operation of AMERICAN AIRLINES
Accident occurred Wednesday, March 25, 1987 in CHICAGO, IL
Probable Cause Approval Date: 11/08/1988
Aircraft: MCDONNELL DOUGLAS DC-10-10, registration: N128AA
Injuries: 1 Serious,5 Minor,171 Uninjured.

NTSB investigators traveled in support of this investigation and used data obtained from various sources to prepare this aircraft accident report.

AFTER ARRIVING AT THE GATE IN CHICAGO, FUMES & SMOKE WERE NOTED IN ZONE C OF THE CABIN, THEN THE CABIN LGTG WENT OUT & THE EMERG LGTG CAME ON. MAINT PSNL FND THE #2 APU HAD AN AUTO-SHUTDOWN DUE TO A MALFUNCTION. THE APU WAS PLACARDED AS INOP & THE ACFT WAS RTRND TO SVC. AS IT WAS CLBG, SHORTLY AFTER TAKEOFF, SMOKE BCM NOTICEABLE & THE CREW ELECTED TO RTRNTO THE ARPT & LND. AFTER LNDG, THE SMOKE HAD DISSIPATED & FIRE DEPT PSNL RPRTD NO INDCN OF SMOKE OR FIRE. SUSPECTING ONLY AN AIR CONDITIONING PROBLEM, THE CREW ELECTED TO CONT TO THE GATE. AS THEY BGN TAXIING, A FLT ATTENDANT RPRTD THE SMOKE WAS INCREASING, SO THE CAPT STOPPED THE ACFT & DIRECTED AN EVACUATION. A X-WIND PREVENTED PROPER DEPLOYMENT OF THESLIDES ON THE RGT SIDE OF THE ACFT. DRG THE EVACUATION, AN ELDERLY PAX, USING SLIDE L-4 ON THE LEFT SIDE, WAS SERIOUSLY INJURED BY OTHERS WHO CAME DOWN THE SLIDE AFTER HIM. ALSO, 5 PAX RECEIVED MINOR INJURIES DRG EVACUATION. AN INV REVEALEDTHE SMOKE WAS CAUSED BY OIL FROM A FAILED APU BEARING WHICH LEAKED INTO THE AIR CONDITIONING SYS.

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

EMERGENCY EQUIPMENT..IMPROPER USE OF


Contributing Factors

WEATHER CONDITION..UNFAVORABLE WIND


Contributing Factors

AUXILIARY POWER UNIT..FAILURE,TOTAL


Contributing Factors

FLUID,OIL..LEAK


Contributing Factors

MAINTENANCE..INADEQUATE..COMPANY MAINTENANCE PERSONNEL


Contributing Factors

AIR COND/HEATING/PRESSURIZATION..SMOKE

Index for Mar1987 | Index of months