# SDR 2004UALA00586

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2004
- Submitted: July 6, 2004
- Operation: Air carrier
- Aircraft: N589UA
- Make and model: Boeing 757222
- Aircraft serial: 28707
- Aircraft time: 26,110 hours, 7,114 cycles
- System (JASC): [2920 · Hydraulic System, Auxiliary](https://openairdocs.org/jasc/2920)
- Part: Packing
- Part number: NAS161210
- Condition: Leaking
- Location: Hyd Pack
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004UALA00586

## Discrepancy

LEFT HYDRAULIC QUANTITY STARTED DROPPING IN CRUISE.  QUANTITY STABILIZED AT .25 PERCENT AFTER PUMPS SELECTED OFF.  PACKING AT HYDRAULIC MOTOR GENERATOR SHUTOFF VALVE WAS LEAKING.  REPLACED PACKING.

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