# SDR WX0A2026030432749

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2026
- Submitted: March 4, 2026
- Operation: Air carrier
- Aircraft: [N331NV](https://openairdocs.org/aircraft/N331NV), registered now
- Make and model: Airbus A319-111
- Registry model: [Airbus A319-111](https://openairdocs.org/model/airbus-a319-111) (OpenAirDocs)
- Aircraft serial: 2625
- Aircraft time: 53,770 hours, 39,509 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 2079003AC
- Part serial: 573214
- Condition: Faulted
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WX0A2026030432749

## Discrepancy

(AIRCRAFT NOT GROUNDED) (EMERGENCY DECLARED) CAB PRESS EXCESS CAB ALT AT CRUISE. / REMOVED AND REPLACED PRESS CONT 2 (12HL) REF. AMM 21-31-34-000-001 AND REF. AMM 21-31-34-400-001. REMOVED AND REPLACED OUTFLOW VALVE (10HL) REF. AMM 21-31-51-000-001 AND REF. AMM 21-31-51-400-001 OR REF. AMM 21-31-51-000-006 AND REF. AMM 21-31-51-400-006 (W/O: 543749, TASKCARD: NR-00001). THIS CLEARS MEL 21-31-01C, MDDR# 226779, INOP STICKER REMOVED, M-ACTION REVERSED.

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