# SDR SWAA2016032850202

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2016
- Submitted: March 28, 2016
- Operation: Air carrier
- Aircraft: N773SA
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27881
- Aircraft time: 56,475 hours, 32,882 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 40631997201AB
- Part serial: 9961156
- Condition: Faulty
- 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/SWAA2016032850202

## Discrepancy

DIVERSION, WHILE CRUISING AT FL 390 CABIN ALTITUDE RATE OF CHANGE WENT TO 4000 FPM CLIMB.  R & R AFT OUTFLOW VLV ASSEMBLY IAW AMM.

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