# SDR SWAA086951

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2008
- Submitted: December 10, 2008
- Operation: Air carrier
- Aircraft: [N261WN](https://openairdocs.org/aircraft/N261WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32517
- Aircraft time: 7,704 hours, 4,515 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 849589
- Part serial: MX675876
- Condition: Faulty
- Location: Nr 2 Engine
- Stage of operation: DE
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA086951

## Discrepancy

DECLARED EMERGENCY.  NR 2 ENGINE DRIVEN HYDRAULIC PUMP LOW PRESSURE LIGHT ILLUMINATED IN FLIGHT.  DURING DESCENT, B-SYSTEM HYDRAULIC FLUID QUANTITY DECREASED FLUID QUANTITY DECREASED TO ZERO WITH SUBSEQUENT LOSS OF B-SYSTEM PRESSURE.  REMOVED AND REPLACED HYDRAULIC PUMP PER MM.

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