# SDR ARWA9608004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N441J](https://openairdocs.org/aircraft/N441J), registered now
- Make and model: Doug DC-8-63F
- Registry model: [Doug DC-8-63F](https://openairdocs.org/model/mcdonnell-douglas-dc-8-63f) (OpenAirDocs)
- Aircraft serial: 45988
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: O-Ring
- Part number: NAS16128
- Condition: Damaged
- Location: Rudder Contl
- Stage of operation: CR
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ARWA9608004

## Discrepancy

INFLIGHT AT FL 350, HYDRAULIC QUANTITY SUDDENLY STARTED DESCENDING AND CONTINUED DESCENDING.  ISOLATED HYDRAULIC SYSTEM.  RETURNED TO MIAMI AND FOUND RUDDER SELECTOR VALVE PLUG LEAKING.  REPLACED O-RING, NO LEAKS NOTED IAW DC-8 MM 29-00-00.

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