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B737NG captain reported the APU initially failed to pick up the electrical load following a malfunction of the #1 engine generator drive; but operated normally after descending to a lower altitude.
| Attributes | |
| ACN | 1599142 |
| Time | |
| Date | 201812 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737 Next Generation Undifferentiated |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Generator Drive |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Type 6397 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
During cruise flight; at FL360; #1 engine drive light illuminated. Completed QRH; disconnected drive and attempted APU start. APU started. Placed on buss. APU performed auto shutdown. Began diversion to [a nearby alternate]. Descended to FL220; and attempted APU restart. APU restarted and stayed running. Oil temp; pressure and quantity remained stable. Monitored engine and canceled diversion. Discussed possible diversion airports if situation changed. Situation remained stable and unchanged. Requested priority handling to [destination]. Situation remained unchanged and continued on. Landing normal.
Original NASA ASRS Text
Title: B737NG Captain reported the APU initially failed to pick up the electrical load following a malfunction of the #1 engine generator drive; but operated normally after descending to a lower altitude.
Narrative: During cruise flight; at FL360; #1 engine drive light illuminated. Completed QRH; disconnected drive and attempted APU start. APU started. Placed on buss. APU performed auto shutdown. Began diversion to [a nearby alternate]. Descended to FL220; and attempted APU restart. APU restarted and stayed running. Oil temp; pressure and quantity remained stable. Monitored engine and canceled diversion. Discussed possible diversion airports if situation changed. Situation remained stable and unchanged. Requested priority handling to [destination]. Situation remained unchanged and continued on. Landing normal.
Data retrieved from NASA's ASRS site 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.