# SDR IPXA2020122263682

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2020
- Submitted: December 23, 2020
- Operation: Air carrier
- Aircraft: [N150UP](https://openairdocs.org/aircraft/N150UP), registered now
- Make and model: Airbus A300 F4-622R
- Registry model: [Airbus A300 F4-622R](https://openairdocs.org/model/airbus-a300-f4-622r) (OpenAirDocs)
- Aircraft serial: 0833
- Aircraft time: 20,682 hours, 12,744 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: CR
- 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/IPXA2020122263682

## Discrepancy

DIVERSION.  NR 1 PRESSURIZATION AFT OUTFLOW STUCK CLOSED ON SHUTDOWN.  DEFERRED CABIN PRESSURE OUTFLOW VALVE AFT, PER MEL 21-31-04-1-1.  C/W DMP 21-31-04-1-1.  PLACARD INSTALLED.  DEFERRAL M730256 APPLIED.  REPLACED FWD OUTFLOW VALVE (202HM), REF AMM 21-31-12 PB0401.  OPERATIONS CHECK GOOD.  THIS CLEARS M730256, DMP REVERSED PLACARD REMOVED, REF LP 804283/1.

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