# SDR P5CA0701541

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2007
- Submitted: December 21, 2007
- Operation: Air carrier
- Aircraft: [N451PA](https://openairdocs.org/aircraft/N451PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30809
- Aircraft time: 30,229 hours, 5,132 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Auto Shutdown
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0701541

## Discrepancy

RECEIVED "APU" AND "APU DOOR" STATUS MESSAGES AND APU AUTO SHUTDOWN FOLLOWING ENGINE START.  RETURN TO BLOCKS AND APPLIED MEL 49-11-1 AND 49-15-1A.  MAINTENANCE ACTION WAS ACCOMPLISHED AS PER THE DDG.

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