# SDR ASAA1158741

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2011
- Submitted: January 10, 2011
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 15,997 hours, 5,011 cycles
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Unknown
- Condition: Malfunctioned
- Location: Electrical Sys
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1158741

## Discrepancy

DURING ENGINE START APU POWER FAILED AFTER START COMPLETE HAD AN EEC ALTN LIGHT ON ENG NR 1.  PERFORMED FIM TASK 73 05 00 810 811 F00 ENG NR 1 ALTN LIGHT ON.  ALL LOGGED FAULTS APPEAR RELATED TO LOSS OF APU ELECTRICAL POWER.  APU GENERATOR SYSTEM CHECKED & RELEASED PER MEL 24 2B.  PERFORMED FIM 24 21 00 810 801.  NO FAULTS. PERFORMED OPERATIONAL TEST OF AC GEN & CTRL SYSTEM.  OPS CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.