# SDR GTIA2021032935661

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2021
- Submitted: March 29, 2021
- Operation: Air carrier
- Aircraft: [N659NK](https://openairdocs.org/aircraft/N659NK), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6770
- Aircraft time: 18,453 hours, 8,015 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA2021032935661

## Discrepancy

CAB PR  SYS  1 & 2  FAULTS IMMEDIATELY AFTER TAKEOFF    CONTROLLED PRESSURE MANUALLY.         ALSO HAD  DOOR AFT R OPEN  &  CAB PR  SAFETY VALVE OPEN   .BOTH INDICATIONS WENT AWAY.-R & R  # 1  CPC  (11HL) AND  #2 CPC  (  12HL )    AS PER TSM 21-31-00-810-802A .  AND IAW AMM 21-31-34-00-001A.OPS TEST GOOD NO DEFECTS NOTED,. A/C OK FOR SERVICE.

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