# SDR AWXA9900327

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 24, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N331AW
- Make and model: Boeing 737-3Y0
- Registry model: [Boeing 737-3Y0](https://openairdocs.org/model/boeing-737-3y0) (OpenAirDocs)
- Aircraft serial: 23747
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Malfunctioned
- Location: Cabin
- Stage of operation: CL
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AWXA9900327

## Discrepancy

CABIN ALTITUDE CLIMBED TO 10,500 WHILE A/C CLIMBED THRU 32,500.  WENT TO MANUAL AND CLOSED OUTFLOW  VALVE, GOT CONTROL OF CABIN AT LOWER ALTITUDE.  PERFORMED AUTO PRESSURIZATION TEST, OPS CHECK GOOD MM 21-31-00.  PERFORMED CABIN LEAK-DOWN CHECK, LK AND OPS CK GOOD MM 05-51-91.

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