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Widebody first officer experiences an APU fire warning with auto shut down and fire bottle discharge during preflight. The passengers are evacuated through the jet bridge; but crash fire rescue equipment finds no evidence of fire. The APU is MEL'ed and the flight departs for north america. Upon gate arrival; with the APU off and switching to ground power; the scenario repeats.
| Attributes | |
| ACN | 1024854 |
| Time | |
| Date | 201207 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | Boeing Company Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | APU Fire/Overheat Warning |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
About 12 minutes prior to departure; approximately one minute after switching from external power to APU power; APU auto shutdown. APU fire light illuminated with EICAS APU fire warning; fire bell and fire bottle auto discharge. Ground control was contacted for crash fire rescue equipment to respond and passenger deplaned right away via jet bridge. No fire (per crash fire rescue equipment). Maintenance performed inspection; meled APU and we departed. Upon switching to external power [after arrival]; APU fire light illuminated with EICAS APU fire warning and fire bell. Ground control contacted to inform of situation and for crash fire rescue equipment to respond. Operations and maintenance also contacted. No fire. Maintenance then took aircraft. There is nothing that we could do to change this. Maintenance [at the departure airport] said that a spike in a power card (or something like that) was the cause. We would not assume anything after arrival and it was absolutely required to call crash fire rescue equipment. We also had no fire bottle at that time.
Original NASA ASRS Text
Title: Widebody First Officer experiences an APU fire warning with auto shut down and fire bottle discharge during preflight. The passengers are evacuated through the jet bridge; but CFR finds no evidence of fire. The APU is MEL'ed and the flight departs for North America. Upon gate arrival; with the APU off and switching to ground power; the scenario repeats.
Narrative: About 12 minutes prior to departure; approximately one minute after switching from external power to APU power; APU auto shutdown. APU FIRE Light illuminated with EICAS APU FIRE warning; FIRE BELL and FIRE BOTTLE auto discharge. Ground Control was contacted for CFR to respond and passenger deplaned right away via jet bridge. No fire (per CFR). Maintenance performed inspection; MELed APU and we departed. Upon switching to external power [after arrival]; APU FIRE Light illuminated with EICAS APU FIRE warning and FIRE BELL. Ground Control contacted to inform of situation and for CFR to respond. Operations and Maintenance also contacted. No Fire. Maintenance then took aircraft. There is nothing that we could do to change this. Maintenance [at the departure airport] said that a spike in a power card (or something like that) was the cause. We would not assume anything after arrival and it was absolutely required to call CFR. We also had no fire bottle at that time.
Data retrieved from NASA's ASRS site as of July 2013 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.