# SDR GTIA2023071037317

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2023
- Submitted: July 11, 2023
- Operation: Air carrier
- Aircraft: [N921NK](https://openairdocs.org/aircraft/N921NK), registered now
- Make and model: Airbus A320-271N
- Registry model: [Airbus A320-271N](https://openairdocs.org/model/airbus-a320-271n) (OpenAirDocs)
- Aircraft serial: 9339
- Aircraft time: 11,700 hours, 4,863 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 2444101AA
- Part serial: 19189244
- Condition: Fault Message
- Location: Cabin Pressure S
- Part time: 11,739 hours, 4,880 cycles
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA2023071037317

## Discrepancy

CAB PR SYS 1 FAULT ( AUTOMATIC CABIN PRESSURE CONTROL SYSTEMS (CPC, OUTFLOW VALVE AUTO CHANNELS) SYSTEM 1 )-REMOVED AND REPLACED CPC 1 OPS CHECK NORMAL IAW AMM 21-32-34-400-001A

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