# SDR P5CA0801563

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2008
- Submitted: May 27, 2008
- Operation: Air carrier
- Aircraft: [N452PA](https://openairdocs.org/aircraft/N452PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30810
- Aircraft time: 32,512 hours, 5,461 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Gasket
- Part number: 0690001981
- Condition: Leaking
- Location: Hyd System
- Stage of operation: CL
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0801563

## Discrepancy

ON CLIMB-OUT OF NRT, NR 3 HYDRAULIC SYSTEM WAS LOST.  QUANTITY AND PRESSURE DROPPED TO ZERO.  FOUND UPPER RUDDER ACTUATOR LEAKING FROM MATING SURFACE OF PROPORTIONAL VALVE AND ACTUATOR.  REPLACED GASKET PLATE.  NO LEAKS NOTED.

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