# SDR CA090520003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2009
- Submitted: June 16, 2009
- Operation: General aviation
- Make and model: Cessna 401B
- Registry model: [Cessna 401B](https://openairdocs.org/model/cessna-401b) (OpenAirDocs)
- Aircraft time: 14,048 hours
- Engine: Cont TSIO520EB
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankcase
- Part number: 643202
- Condition: Cracked
- Location: Engine
- Part time: 998 hours
- 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/CA090520003

## Discrepancy

(CAN) AN OIL LEAK WAS NOTED ON THE LT ENGINE. A CRACK WAS FOUND IN THE RT CRANKCASE HALF. THE CRACK WAS LOCATED AFT OF THE ALTERNATOR, FWD OF THE NR 5 CYL, 7TH STUD. THE ENGINE WAS REMOVED FOR REPAIR.

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