# SDR DALA2022080505377

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 4, 2022
- Submitted: August 5, 2022
- Operation: Air carrier
- Aircraft: [N851NW](https://openairdocs.org/aircraft/N851NW), registered now
- Make and model: Airbus A330-223
- Registry model: [Airbus A330-223](https://openairdocs.org/model/airbus-a330-223) (OpenAirDocs)
- Aircraft serial: 0609
- Aircraft time: 71,323 hours, 9,384 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: None
- Condition: None
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2022080505377

## Discrepancy

SHIP 3351 LOUD SQUEAL NOTED WHILE IN CREW BUNK AT CRUISE. CORRECTIVE ACTION: PRESSURIZED A/C FOUND AFT OUTFLOW VALVE SQUEALING. UPON REMOVAL OF AFT OUTFLOW VALVE, FOUND GASKET TO BE ELONGATED. REPLACED GASKET AND INSTALLED OUTFLOW. PERFORMED A/C PRESSURIZATION. (8980879)

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