# SDR GTIA2022111836783

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2022
- Submitted: November 18, 2022
- Operation: Air carrier
- Aircraft: [N603NK](https://openairdocs.org/aircraft/N603NK), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 4321
- Aircraft time: 45,205 hours, 20,720 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Outflow Valve
- Part number: 2079003AC
- Part serial: 0973325
- Condition: Open
- Part time: 1,146 hours, 515 cycles
- Stage of operation: UK
- How discovered: V
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA2022111836783

## Discrepancy

CAB PR SAFETY VALVE OPEN DELTA P 8.4 AND CABIN ALT 9000 FT TILL 12000 OUTFLOW VALVE WASN'T WORKING. CAB LOW DIFF PR-TROUBLESHOT IAW TSM 21-31-00-810-808-A. R/R OUTFLOW VALAVE IAW AMM 21-31-51 OPS CHECK GOOD. PERFORMED PRESSURIZTION IAW AMM 05-53-00 TEST GOOD. NO FURTHER DEFECTS NOTED AT THIS TIME

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