# SDR CA070827013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 27, 2007
- Submitted: October 24, 2007
- Operation: General aviation
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft time: 3,296 hours
- Engine: Lyc O360A4M
- Propeller: Mcauly 1A200DFA
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve Spring
- Part number: AEL11800
- Condition: Broken
- Location: Intake
- Part time: 313 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA070827013

## Discrepancy

(CAN) ALUMINUM PARTICLES WERE FOUND IN THE OIL FILTER. UPON TEARDOWN OF THE ENGINE, A BROKEN INTAKE VALVE SPRING (OUTER) HAS DAMAGED THE ALUMINUM CYLINDER HEAD. (TC NR 20070827013)

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