# SDR CA040511003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 22, 2004
- Submitted: June 4, 2004
- Operation: General aviation
- Make and model: Dhav DHC3
- Aircraft time: 20,717 hours
- Engine: Pwa S3H1G
- Propeller: Hamstd 23D40
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Casting
- Part number: 399359
- Condition: Corroded
- Location: Valve Guide
- Component: Cylinder, Pwa
- Component part number: 399359
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA040511003

## Discrepancy

(CAN) THE ALUMINUM CASTING IN WHICH THE VALVE GUIDE SLIDES HAD DISINTEGRATED DUE TO CORROSION INSIDE THE EXHAUST PORT. IT WAS PROBABLY A POOR QUALITY PART THAT WAS INSTALLED DURING THE LAST OVERHAUL.

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