# SDR AU000348

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2000
- Submitted: June 23, 2000
- Operation: Air carrier
- Make and model: Boeing 737377
- 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: 21,444 cycles
- Stage of operation: CR
- 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/AU000348

## Discrepancy

(AUS) SYSTEM A HYDRAULIC PUMP FAILED INTERNALLY. SUSPECT CAUSED BY  FAILED TRUNNION BEARINGS. METAL CONTAMINATION OF HYDRAULIC  FILTERS.

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