# SDR SWAA114835

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2011
- Submitted: July 6, 2011
- Operation: Air carrier
- Aircraft: [N904WN](https://openairdocs.org/aircraft/N904WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36616
- Aircraft time: 12,525 hours, 7,529 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 849589
- Part serial: MX598635
- Condition: Leaking
- Location: Nr 1 Engine
- Stage of operation: UK
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA114835

## Discrepancy

DECLARED EMERGENCY  - DURING FLIGHT, A SYSTEM HYDRAULIC QUANTITY DROPPED TO 1590.  NR 1 ENGINE DRIVEN HYDRAULIC PUMP LOW PRESSURE LIGHT CAME ON AS WELL AS MASTER CAUTION AND HYDRAULIC ANNUNCIATOR LIGHT.  REMOVED AND REPLACED FEEL COMPUTER AND ENGINE DRIVEN HYDRAULIC PUMP PER MM.

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