# SDR NACA2021092900001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2021
- Submitted: October 12, 2021
- Operation: Air carrier
- Aircraft: [N351CM](https://openairdocs.org/aircraft/N351CM), registered now
- Make and model: Boeing 767323
- Aircraft serial: 25201
- Aircraft time: 104,662 hours, 18,494 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Pressure Switch
- Condition: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA2021092900001

## Discrepancy

DISCREPANCY: APU SHUTDOWN AFTER STARTING AND RUNNING FOR 10 MINUTES. CORRECTIVE ACTION: DEFERRED PER MEL 49-11-01A ON 9-29-21@ 2155Z CAT C AC RELEASED NO ETOPS. REMOVED AND REPLACED GENERATOR FILTER DIFF PRESS SWITCH IAW 767 AMM  49-27-15, OPS CHECK LEAK CHECK GOOD. ETOPS GROUND VERIFICATION COMPLIED WITH.

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