# SDR SWAA104672

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2010
- Submitted: August 10, 2010
- Operation: Air carrier
- Aircraft: N620SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 28036
- Aircraft time: 48,298 hours, 39,581 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Valve
- Part number: 3964221
- Part serial: 2956
- Condition: Defective
- Location: Ac Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA104672

## Discrepancy

CHEMICAL/HEAT SMELL ON ROTATION, WENT COLD ON PACKS.  FOUND LT PACK VALVE STUCK IN ON POSITION.  REMOVED AND REPLACED LT PACK VALVE PER MM.

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