# SDR 99ZZZX3400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N2649Z](https://openairdocs.org/aircraft/N2649Z), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0333
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Solenoid
- Condition: Stuck
- Location: Hyd Manifold
- Component: 99101883
- Stage of operation: NR
- Nature of condition: B, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3400

## Discrepancy

DURING FIGHT, PILOT REPORTED SMOKE IN THE COCKPIT AND RETURNED TO AIRPORT FOR AN UNEVENTFUL LANDING.  THE MAINTENANCE DEPARTMENT WAS DISPATCHED.  POSSIBLE CAUSE WAS HYDRAULIC MANIFOLD SOLENOID STUCK AND CAUSED SYSTEM TO OVERHEAT CAUSING A PIN HOLE IN THE HYDRAULIC SIGHT GAUGE.  THIS CAUSED THE HYDRAULIC FLUID TO ESCAPE AS A MIST.

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