# SDR AALA20161223001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 2016
- Submitted: December 27, 2016
- Operation: Air carrier
- Aircraft: [N930AN](https://openairdocs.org/aircraft/N930AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29529
- Aircraft time: 50,306 hours, 20,585 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 849589
- Part serial: MX739053
- Condition: Faulty
- Location: Hydraulic Sys
- 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/AALA20161223001

## Discrepancy

LEFT ENGINE HYDRAULIC PUMP LOW PRESSURE LIGHT ILLUMINATED AFTER 15 MINUTES.  SYSTEM A HYDRAULIC QUANTITY DROPPED TO 18%. EMERGENCY DECLARED,  DIVERTED, AIRCRAFT WAS GROUNDED.   LANDING UNEVENTFUL.  REMOVED AND REPLACED LEFT ENGINE HYDRAULIC PUMP IAW AMM 29-11-11.  OPERATIONAL CHECK GOOD.

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