# SDR SWAA2015121447053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2015
- Submitted: December 14, 2015
- Operation: Air carrier
- Aircraft: [N399WN](https://openairdocs.org/aircraft/N399WN), registered now
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 27693
- Aircraft time: 66,022 hours, 53,271 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 887477
- Part serial: MX5840665
- Condition: Faulty
- Location: Hydraulic Sys
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2015121447053

## Discrepancy

DECLARED EMER, DURING APPROACH WITH GEAR & FLAPS 30, MASTER CAUTION & HYD LIGHTS ILLUMINATED.  INDICATIONS WERE A SYS HYD LOW PRESS, BOTH ENG & ELEC, LIGHTS & ZERO A SYS QTY.  R & R A ELEC MOTOR DRIVEN PUMP IAW AMM.

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