# SDR 99ZZZX4445

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N75CK](https://openairdocs.org/aircraft/N75CK), registered now
- Make and model: Lear 25D
- Registry model: [Lear 25D](https://openairdocs.org/model/gates-learjet-25d) (OpenAirDocs)
- Aircraft serial: 256
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Fitting
- Condition: Leaking
- Location: Hydraulic System
- Stage of operation: IN
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX4445

## Discrepancy

AFTER AN UNEVENTFUL LANDING, THE FLIGHT CREW NOTED HYDRAULIC FLUID LEAKING FROM THE AIRCRAFT BELLY.  MAINTENANCE PERSONNEL DISCOVERED A LOOSE JAM NUT ON A FITTING ON THE INBOARD GEAR DOOR SELECTOR VALVE.  JAM NUT WAS TIGHTENED, SYSTEM LEAK CHECK WAS SATISFACTORY.  RESERVOIR SERVICED AND HYDRAULIC SYSTEM TESTED.

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