# SDR AU980479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- System (JASC): [2821 · Aircraft Fuel Filter/Strainer](https://openairdocs.org/jasc/2821)
- Part: Filter
- Condition: Contaminated
- Location: Fuel Sys
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU980479

## Discrepancy

(AUS) DURING MAINTENANCE, BOTH MAIN FUEL FILTERS WERE FOUND HEAVILY CONTAMINATED BY A GREASY SUBSTANCE OVER THE FILTER WAFERS.  THE SUBSTANCE WAS FOUND TO BE WATER SOLUBLE AND WHEN LEFT IN WATER PRODUCED (BY MULTIPLICATION), A GELATINOUS FUNGUS LIKE SUBSTANCE.

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