# SDR F3LA2023102500197

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2023
- Submitted: October 25, 2023
- Operation: Air carrier
- Aircraft: [N363FR](https://openairdocs.org/aircraft/N363FR), registered now
- Make and model: Airbus A320-251N
- Registry model: [Airbus A320-251N](https://openairdocs.org/model/airbus-a320-251n) (OpenAirDocs)
- Aircraft serial: 09260
- Aircraft time: 12,139 hours, 5,463 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 2079020BA
- Part serial: 13116265
- Condition: Faulty
- Location: Zone 100
- Part time: 2 cycles
- Stage of operation: CL
- 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/F3LA2023102500197

## Discrepancy

REFERENCE LP302817 ITEM 1-3,  AC WAS GROUNDED AS A RESULT OF AN SDR EVENT. DURING CLIMB CPC 1 FAILED FOLLOWED BY CPC 2. UNABLE TO MANUALLY CONTROL OUTFLOW VALVE IN MANUAL MODE. DURING CPC FAILURE, SAFETY VALVE WENT FULLY OPEN. CABIN INDICATIONS SHOWED PSI FLUCTUATING BETWEEN 0-(-)4 ( NEGATIVE) SAFETY VALVE CLOSED ON SHORT FINAL APPROACH.  REMOVED AND REPLACED OUTFLOW CALVE IN ACCORDANCE W AMM 21-31-51-000-001A. OPS TEST GOOD. AC RELEASED FOR OCF.

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