# SDR SWAA115172

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2011
- Submitted: July 21, 2011
- Operation: Air carrier
- Aircraft: N352SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 24888
- Aircraft time: 67,405 hours, 58,777 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Module
- Part number: 651782121
- Part serial: 1102
- Condition: Faulty
- Location: Hydraulic Sys
- Stage of operation: UK
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA115172

## Discrepancy

AIR TURNBACK, LOSS OF "A" SYSTEM HYDRAULICS, LOW PRESSURE LIGHTS ON ENGINE 1 AND ELEC 2/ NORMAL QTY, LIGHTS CAME ON JUST AS LANDING GEAR RAISED.  REMOVED AND REPLACED "A" SYSTEM HYDRAULIC MODULE PER MM.

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