# SDR AALA202103219005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2021
- Submitted: March 22, 2021
- Operation: Air carrier
- Aircraft: [N910AU](https://openairdocs.org/aircraft/N910AU), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7876
- Aircraft time: 10,763 hours, 4,113 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202103219005

## Discrepancy

AIRCRAFT WAS GROUNDED: VENT SKIN VALVE FAULT AFTER TAKE OFF. AIRCRAFT WOULD NOT PRESSURIZE CABIN ALTITUDE PRESSURE 8,750 AT 10,000 FEET. SKIN AIR OUTLET VALVE REPLACED IAW AMM 21-26-53-400-001-A01.

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