# SDR AUS20010717

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2001
- Submitted: August 7, 2001
- Operation: General aviation
- Make and model: Cessna 172N
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Engine: Lyc O320H2AD
- Propeller: Mcauly 1C160DTM
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankcase
- Part number: L801776
- Condition: Faulty
- Location: Reciprocating En
- Component: Reciprocating En, Lyc, O320H2AD
- 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/AUS20010717

## Discrepancy

(AUS) CRANKCASE INCORRECTLY LINE BORED REDUCING DECK HEIGHT BY 1.016MM(0.040IN). THIS ALLOWED NO3 PISTON TO CONTACT THE CYLINDER HEAD.METAL CONTAMINATION OF ENGINE. PERSONNEL/MAINTENANCE ERROR.

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