# SDR SWAA054108

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2005
- Submitted: December 27, 2005
- Operation: Air carrier
- Aircraft: N664WN
- Make and model: Boeing 737-3Y0
- Registry model: [Boeing 737-3Y0](https://openairdocs.org/model/boeing-737-3y0) (OpenAirDocs)
- Aircraft serial: 23495
- Aircraft time: 62,884 hours, 48,340 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Module
- Part number: 65449913
- Part serial: 1265
- Condition: Faulty
- Location: Hyd System
- 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/SWAA054108

## Discrepancy

AIR TURNBACK, LOST A-SYSTEM HYDRAULIC QUANTITY, HYDRAULIC ENGINE & ELECT PUMPS.  REMOVED AND REPLACED HYDRAULIC TAIL ISOLATION VALVE MODULE PER MM.

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