# SDR SWAA021037

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2002
- Submitted: May 15, 2002
- Operation: Air carrier
- Aircraft: N643SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 27716
- Aircraft time: 18,381 hours, 15,713 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Outflow Valve
- Part number: 322684007
- Part serial: 60187
- Condition: Erratic
- Location: Fwd Cargo
- Stage of operation: CL
- Nature of condition: O
- Precautionary procedure: A, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA021037

## Discrepancy

AIR TURN BACK, DUE TO LOUD NOISE/SQUEAL AND CABIN PRESSURIZATION CONTROL FLUCTUATION.  REMOVED AND REPLACED FWD CARGO OUTFLOW VALVE PER MM.

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