# SDR NACA2025051500003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2025
- Submitted: May 20, 2025
- Operation: Air carrier
- Aircraft: [N566NC](https://openairdocs.org/aircraft/N566NC), registered now
- Make and model: Boeing 767-3BG
- Registry model: [Boeing 767-3BG](https://openairdocs.org/model/boeing-767-3bg) (OpenAirDocs)
- Aircraft serial: 30566
- Aircraft time: 78,044 hours, 20,158 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Faulted
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA2025051500003

## Discrepancy

APU FAULT 2 ATTEMPTS KMIA. THIRD ATTEMPT FAILED, FOLLOWED FIM 49-11 FAULT TREE 989 REPLACED APU STARTER NO HELP. DEFERRED APU IAW MEL 49-11-01A CAT C ON 5/15/2025 @ 1850Z

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