The APU on an air carrier large transport frtr caught on fire. 2 ramp persons were injured.

Attributes
ACN	249189
Time
Date	199308
Day	Wed
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : mco
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : flight engineer pilot : atp pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 109 flight time total : 8500 flight time type : 1500
ASRS Report	249189
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa other other : unspecified
Resolutory Action	flight crew : declared emergency other
Consequence	other other
Supplementary
Primary Problem	Aircraft

Narrative:

After engine start, preparing for taxi, during my before taxi flow, a strange noise was coming from what appeared to be the air conditioning packs. Smoke became evident (smell only) and the APU fire warning sounded. I completed the APU fire checklist and called for land evacuate/evacuation checklist. We promptly exited the aircraft. The ground crew brought our stairs over and we made a normal exit through the cabin door. The ground crew, assisted by one of our jump seat riders, extinguished the fire, 2 of which were exposed to smoke, and taken to the local hospital. The mco fire crew arrived promptly and secured the aircraft.

Original NASA ASRS Text

Title: THE APU ON AN ACR LGT FRTR CAUGHT ON FIRE. 2 RAMP PERSONS WERE INJURED.

Narrative: AFTER ENG START, PREPARING FOR TAXI, DURING MY BEFORE TAXI FLOW, A STRANGE NOISE WAS COMING FROM WHAT APPEARED TO BE THE AIR CONDITIONING PACKS. SMOKE BECAME EVIDENT (SMELL ONLY) AND THE APU FIRE WARNING SOUNDED. I COMPLETED THE APU FIRE CHKLIST AND CALLED FOR LAND EVAC CHKLIST. WE PROMPTLY EXITED THE ACFT. THE GND CREW BROUGHT OUR STAIRS OVER AND WE MADE A NORMAL EXIT THROUGH THE CABIN DOOR. THE GND CREW, ASSISTED BY ONE OF OUR JUMP SEAT RIDERS, EXTINGUISHED THE FIRE, 2 OF WHICH WERE EXPOSED TO SMOKE, AND TAKEN TO THE LCL HOSPITAL. THE MCO FIRE CREW ARRIVED PROMPTLY AND SECURED THE ACFT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.