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A B737-300 flight crew received an APU fire warning in cruise flight. They declared an emergency and diverted to nearest suitable airport.
| Attributes | |
| ACN | 706392 |
| Time | |
| Date | 200608 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 34000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc tower : okc.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 240 flight time total : 6000 flight time type : 4000 |
| ASRS Report | 706392 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : declared emergency flight crew : diverted to another airport flight crew : landed as precaution |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
In cruise flight; with the APU off; we got an 'APU detent inoperative' light. Applied flight manual procedure and then sent a maintenance report. Approximately 10 mins later; got a fire bell associated with the APU fire handle illuminated. Handled in accordance with flight manual -- pulled and turned to release extinguishing agent. Handle stayed illuminated until over airport -- diverted to airport that had good WX; was close and familiar to both I and the captain. Declared emergency; company notified via ATC and aircraft prepared for evacuate/evacuation. With the light out; decided not to evacuate/evacuation. Had crash fire rescue equipment crew waiting at rollout for any signs of fire. None noted. All checklists and procedures were done in accordance with proper operating techniques. Flight attendants did an excellent job for short notice preparation! All passenger deplaned through normal means with no injuries.
Original NASA ASRS Text
Title: A B737-300 FLT CREW RECEIVED AN APU FIRE WARNING IN CRUISE FLT. THEY DECLARED AN EMER AND DIVERTED TO NEAREST SUITABLE ARPT.
Narrative: IN CRUISE FLT; WITH THE APU OFF; WE GOT AN 'APU DETENT INOP' LIGHT. APPLIED FLT MANUAL PROC AND THEN SENT A MAINT RPT. APPROX 10 MINS LATER; GOT A FIRE BELL ASSOCIATED WITH THE APU FIRE HANDLE ILLUMINATED. HANDLED IN ACCORDANCE WITH FLT MANUAL -- PULLED AND TURNED TO RELEASE EXTINGUISHING AGENT. HANDLE STAYED ILLUMINATED UNTIL OVER ARPT -- DIVERTED TO ARPT THAT HAD GOOD WX; WAS CLOSE AND FAMILIAR TO BOTH I AND THE CAPT. DECLARED EMER; COMPANY NOTIFIED VIA ATC AND ACFT PREPARED FOR EVAC. WITH THE LIGHT OUT; DECIDED NOT TO EVAC. HAD CFR CREW WAITING AT ROLLOUT FOR ANY SIGNS OF FIRE. NONE NOTED. ALL CHKLISTS AND PROCS WERE DONE IN ACCORDANCE WITH PROPER OPERATING TECHNIQUES. FLT ATTENDANTS DID AN EXCELLENT JOB FOR SHORT NOTICE PREPARATION! ALL PAX DEPLANED THROUGH NORMAL MEANS WITH NO INJURIES.
Data retrieved from NASA's ASRS site as of January 2009 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.