# SDR AU510001523

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2005
- Submitted: June 6, 2006
- Operation: General aviation
- Make and model: Boeing 737-7Q8
- Registry model: [Boeing 737-7Q8](https://openairdocs.org/model/boeing-737-7q8) (OpenAirDocs)
- Engine: Ge CFM56*
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Bearing
- Part number: 21830
- Condition: Failed
- Location: Hydraulic Pump
- Part time: 13,168 hours
- Component: Hydraulic Pump
- Component part number: 5718607
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU510001523

## Discrepancy

HYDRAULIC SYSTEM `A` ELECTRIC PUMP FAILED.  INVESTIGATION FOUND THE FAILURE WAS CAUSED BY FAILURE OF THE PRE-MOD SB 57186-29-291 TRUNNION NEEDLE BEARING.

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