NTSB Identification: MIA87IA237.
The docket is stored on NTSB microfiche number 34875.
Scheduled 14 CFR operation of AMERICAN AIRLINES
Incident occurred Wednesday, September 02, 1987 in TAMPA, FL
Probable Cause Approval Date: 07/10/1989
Aircraft: BOEING 727-223, registration: N844AA
Injuries: 4 Minor,36 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.
DURING DESCENT THE B727 CREW NOTED THE FIRE WARNING LIGHT ILLUMINATE ON THE #1 ENGINE. THEY DISCHARGED 2 FIRE BOTTLES INTO THE ENGINE BUT THE WARNING LIGHT REMAINED ILLUMINATED. THEY DECLARED AN EMERGENCY AND LANDED AT THEIR DESTINATION. AN EMERGENCY EVACUATION WAS CONDUCTED, AND 4 PASSENGERS RECEIVED MINOR INJURIES. EXAMINATION REVEALED THAT THE 13TH STAGE BLEED AIR DUCT LINE TO THE FUEL HEATER WAS LEAKING AT THE INPUT SIDE AND WAS IMPINGING ON A FIRE DETECTION LOOP ABOUT 2 INCHES FROM THE LEAK.
The National Transportation Safety Board determines the probable cause(s) of this incident to be:BLEED AIR SYSTEM,LINES..LEAK
ANNUNCIATOR PANEL LIGHT(S)..FALSE INDICATION
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