# SDR CA141007007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2014
- Submitted: March 12, 2015
- Operation: General aviation
- Make and model: Cessna T310R
- Registry model: [Cessna T310R](https://openairdocs.org/model/cessna-t310r) (OpenAirDocs)
- Aircraft time: 4,099 hours
- Engine: Cont TSIO520B
- Propeller: Mcauly 3AF32C87
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Part number: AEC631397
- Condition: Leaking
- Location: Engine
- Part time: 699 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/CA141007007

## Discrepancy

(CAN) OWNER REPORTED A SMALL OIL LEAK ON BOTH ENGINES.  UPON INVESTIGATING IT WAS FOUND THAT EACH ENGINE HAD A CRACKED CYLINDER HEAD.  4 CYLINDERS WERE REPLACED 90 HOURS PRIOR WITH THE SAME PROBLEM.  LT CYLINDER NR 6 CRACKED ON INTAKE PORT WHERE YOU COULD SEE BLUE STREAKING IN BETWEEN FINS.  RT CYLINDER NR 1 CRACKED IN THE SAME MANNER.

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