# SDR SWAA074032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2007
- Submitted: August 14, 2007
- Operation: Air carrier
- Aircraft: N523SW
- Make and model: Boeing 737-5H4
- Registry model: [Boeing 737-5H4](https://openairdocs.org/model/boeing-737-5h4) (OpenAirDocs)
- Aircraft serial: 26565
- Aircraft time: 49,309 hours, 49,388 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Check Valve
- Part number: 00915202002
- Part serial: 03782
- Condition: Faulty
- Location: Hydraulic Sys
- Stage of operation: CR
- 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/SWAA074032

## Discrepancy

DURING FLIGHT WITH RT PACK RUNNING, BAD HYDRAULIC FLUID SMELL IN CABIN.  REMOVED AND REPLACED HYDRAULIC CHECK VALVES ON RESERVOIR PRESSURIZATION MODULE PER MM.

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