# SDR CA091013009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2009
- Submitted: December 1, 2009
- Operation: General aviation
- Make and model: Robsin R44
- Aircraft time: 4,400 hours
- Engine: Lyc O540F1B5
- System (JASC): [2916 · Hydraulic Reservoir, Main](https://openairdocs.org/jasc/2916)
- Part: Reservoir
- Part number: D2111
- Condition: Venting
- Location: Hyd System
- Part time: 463 hours
- Stage of operation: NR
- 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/CA091013009

## Discrepancy

(CAN) HYD OIL CONTINUOUSLY VENTING OUT OF THE RESERVOIR THROUGH THE FILLER CAP LOSING APROX HALF OF THE SIGHT GLASS EVERY 50 HOURS OF OPERATION.

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