# SDR ASMF200511004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 5, 2005
- Submitted: November 9, 2005
- Operation: Air carrier
- Aircraft: [N851AM](https://openairdocs.org/aircraft/N851AM), registered now
- Make and model: Boeing 737*
- Aircraft serial: 29363
- Aircraft time: 5,769 hours, 3,054 cycles
- Engine: Ge CFM56*
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Condition: Failed
- Location: Apu Bay
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF200511004

## Discrepancy

DURING ENGINES STARTING, THE PNEUMATIC AUXILIARY POWER UNIT FAILED. THE ENGINES WERE STARTED WITH EXTERNAL PNEUMATIC PLANT IAW MM 49-11-00, TESTED CORRECT. THE FIM PROCEDURE WAS PERFORMED IAW FIM 49-55 TASK 804, ALL CORRECT.

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