# SDR SWAA072648

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2007
- Submitted: May 25, 2007
- Operation: Air carrier
- Aircraft: N708SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27842
- Aircraft time: 31,954 hours, 19,188 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Part number: 7207376
- Part serial: 96C812
- Condition: Inoperative
- 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/SWAA072648

## Discrepancy

AIR TURNBACK, AIRCRAFT DID NOT PRESSURIZE IN AUTO OR ALTERNATE MODE.  REMOVED AND REPLACED NEGATIVE PRESSURE VALVE PER MM.

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