NTSB Identification: MIA87IA078.
The docket is stored on NTSB microfiche number 32928.
Scheduled 14 CFR operation of FLORIDA EXPRESS,INC.
Incident occurred Wednesday, January 28, 1987 in ORLANDO, FL
Probable Cause Approval Date: 07/10/1989
Aircraft: British Aircraft Corp. (BAC) BAC 1-11 201, registration: N101EX
Injuries: 38 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.

AFTER LANDING THE AUXILIARY POWER UNIT WAS STARTED AND THE NUMBER ONE ENGINE WAS SHUTDOWN. THE AIRCRAFT THEN BEGAN TO PRESSURIZE AND FILL WITH SMOKE. AN EMERGENCY EVACUATION WAS ORDERED BY THE CAPTAIN THROUGH L-1 AND R-1 DOORS. THE SLIDE AT R-1 DID NOT WORK AND ALL CREW AND PASSENGERS EXITED THROUGH L-1. POST INCIDENT EXAMINATION REVEALED THE NUMBER ONE GENERATOR TRIP RELAY FAILED NOT ALLOWING APU ELECTRICAL POWER TO FEED THE NUMBER ONE BUSS. THIS BUSS SUPPLIES POWER TO THE PRESSURIZATION OUTFLOW VALVE AND COOLING FANS FOR THE AIR CONDITIONING PACKS. THE AIR CONDITIONING PACKS OVERHEATED CAUSING SMOKE TO BE EMITTED THROUGH THE AIR CONDITIONING DUCTS. THE R-1 DOOR SLIDE WAS FOUND TO NOT HAVE THE MANUAL OR AUTOMATIC ACTIVATION CONTROLS CONNECTED.

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

ELECTRICAL SYSTEM,ELECTRIC RELAY..FAILURE,TOTAL


Contributing Factors

MISC EQPT/FURNISHINGS,SLIDES..DISCONNECTED


Contributing Factors

AIR COND/HEATING/PRESSURIZATION..OVERTEMPERATURE


Contributing Factors

AIR COND/HEATING/PRESSURIZATION..SMOKE

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