# SDR WX0A2024080532139

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 4, 2024
- Submitted: August 5, 2024
- Operation: Air carrier
- Aircraft: [N199NV](https://openairdocs.org/aircraft/N199NV), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 7207
- Aircraft time: 16,808 hours, 6,157 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: I
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WX0A2024080532139

## Discrepancy

(AIRCRAFT GROUNDED) AIRCRAFT WONT PRESSURIZE CABIN CLIMBED WITH ALTITUDE, PER TSM 21-31-00-810-808-A REMOVED AND REPLACED CABIN PRESSURE SAFETY VALVE AT 7HL IAW AMM 21-31-52-400-001-A. PER TSM 21-31-00-810-808-A REMOVED AND REPLACED CABIN PRESSURE SAFETY VALVE AT 6HL IAW AMM 21-31-52-000-001-A AND 21-31-52-400-001-A. OPS CHECKS GOOD. REMOVED AND REPLACED SDAC 1 REF AMM 31-55-34-000-001-A, FOR REMOVAL. REF AMM 32-55-400-001-A, FOR INSTALLATION. OPS CHECKED GOOD, REF AMM 31-50-00-710-001. REMOVED AND REPLACED CPC-1 REF AMM 21-31-34-000-001-A REMOVAL. REF AMM 21-31-34-400-001-A INSTALLITION. OPS CHECKED GOOD REF AMM 21-31-00-710-002.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.