# SDR 2004FA0000176

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2003
- Submitted: February 11, 2004
- Operation: General aviation
- Aircraft: [N391NS](https://openairdocs.org/aircraft/N391NS), registered now
- Make and model: Snias AS350B2
- Aircraft serial: 3481
- Engine: Tmeca ARRIEL1D1
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Shim
- Part number: 813468
- Condition: Missing
- Location: Hyd Filter
- Part time: 76 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004FA0000176

## Discrepancy

HYDRAULIC FILTER BYPASS BUTTON POPPED (NO SHIMS INSTALLED).

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