# SDR UPS804796

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 11, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N700UP
- Make and model: Doug DC-8-71F
- Registry model: [Doug DC-8-71F](https://openairdocs.org/model/douglas-dc-8-71f) (OpenAirDocs)
- Aircraft serial: 45900
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Failed
- Location: Slot Cntrl Valve
- Stage of operation: CR
- Nature of condition: K, J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS804796

## Discrepancy

CREW REPORTED HYDRAULIC SYSTEM LOST FLUID RAPIDLY IN CRUISE EMERGENCY SHUT-DOWN.  HYD FLUID FELL TO STANDPIPE.  FOUND O-RING BLOWN ON SLPT INLET CHECK VALVE ON SLOT CONTROL VALVE.  REPLACED O-RINGS ON CHECK VALVE.  LEAK CHK NORMAL PER DC8 MM 27-80-04, PG.201.  CHANGED NR 3 ENG HYD PUMP AND FILTERS IAW MM 29-10-12.  SERVICED HYD RESERVOIR IAW 12-30-01.

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