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The pilots of a commercial aircraft were unable to start the auxiliary power unit due to an unknown electrical problem. Maintenance suggested restarting the left engine; but the attempt created a rapid rise in the temperature of the main battery; so the captain aborted the start and powered down the aircraft.
| Attributes | |
| ACN | 1063170 |
| Time | |
| Date | 201301 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Component | |
| Aircraft Component | Electrical Power |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 260 Flight Crew Total 20000 Flight Crew Type 10000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Just short of the gate [the first officer] engaged the APU (auxiliary power unit) starter. This action caused a dc bus fault; a number 2 generator fault and the APU appeared electrically dead. We stopped the aircraft; set the [parking brake] and pulled the non-normal checklist. Next we called maintenance and we were instructed to try to start the number 1 engine. The engine spooled up slowly and weaker than normal so I discontinued the start before the introduction of fuel. The main battery started to rise in temperature very quickly. So we powered the aircraft down; removed the passengers and notified maintenance.
Original NASA ASRS Text
Title: The pilots of a commercial aircraft were unable to start the Auxiliary Power Unit due to an unknown electrical problem. Maintenance suggested restarting the left engine; but the attempt created a rapid rise in the temperature of the main battery; so the Captain aborted the start and powered down the aircraft.
Narrative: Just short of the gate [the First Officer] engaged the APU (Auxiliary Power Unit) starter. This action caused a DC bus fault; a Number 2 Generator fault and the APU appeared electrically dead. We stopped the aircraft; set the [parking brake] and pulled the Non-Normal Checklist. Next we called Maintenance and we were instructed to try to start the Number 1 Engine. The engine spooled up slowly and weaker than normal so I discontinued the start before the introduction of fuel. The main battery started to rise in temperature very quickly. So we powered the aircraft down; removed the passengers and notified Maintenance.
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.