# SDR 98ZZZX4469

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N954CC](https://openairdocs.org/aircraft/N954CC), registered now
- Make and model: Cessna 182Q
- Registry model: [Cessna 182Q](https://openairdocs.org/model/cessna-182q) (OpenAirDocs)
- Aircraft serial: 18265290
- Engine: Cont O470U
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankcase
- Part number: 642522A1
- Condition: Cracked
- Location: Engine
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX4469

## Discrepancy

DURING A ROUTINE OIL CHANGE, A CRACK WAS FOUND IN THE CRANKCASE THAT RADIATES ABOUT ONE INCH TOWARDS THE CENTER OF THE ENGINE STARTING FROM THE FORWARD UPPER HOLD DOWN STUD ON THE NR 5 CYLINDER.  THE ENGINE WAS RETURNED TO THE FACTORY FOR A CRANKCASE REPLACEMENT.  SUBMITTER SUGGESTED POSSIBLE CAUSE AS DEFECTIVE PARTS. (CRANKCASE) INSTALLED IN THE ENGINE AT REMANUFACTURE.

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