# SDR CWQ2002F00001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2002
- Submitted: May 20, 2002
- Operation: Air carrier
- Aircraft: [N790QS](https://openairdocs.org/aircraft/N790QS), registered now
- Make and model: Cessna 650
- Registry model: [Cessna 650](https://openairdocs.org/model/cessna-650) (OpenAirDocs)
- Aircraft serial: 6507090
- Engine: Garrtt TFE731*
- System (JASC): [7170 · Engine Drains](https://openairdocs.org/jasc/7170)
- Part: O-Ring
- Part number: MS29513010
- Condition: Leaking
- Location: Sump Drain Vlve
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CWQ2002F00001

## Discrepancy

AFTER DRAINING FUEL SUMPS DURING PRE-FLIGHT INSPECTION .  NOTICED 5 DRAIN VALVES LEAKING.  REPLACED O-RINGS.  O-RINGS FOUND TO BE CRACKED, O-RINGS THAT ARE RESISTANT TO FUEL SHOULD BE USED.

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