# SDR CA150319007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2014
- Submitted: August 5, 2015
- Operation: General aviation
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft time: 13,717 hours
- Engine: Lyc O320E2D
- Propeller: Mcauly 1C160DTM
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Camshaft
- Part number: LW18840
- Condition: Worn
- Location: Engine
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA150319007

## Discrepancy

(CAN) DURING A 100 HR INSPECTION, CYLINDER NR 4 DIFFERENTIALS WERE FOUND SATISFACTORY LIMITS.  UPON FURTHER INSPECTION AFTER REMOVAL OF THE NR 4 CYLINDER, NR 4 INTAKE AND NR 3 EXHAUST LOBE ON CAMSHAFT DISPLAYED SIGNS OF PREMATURE WEAR.  ENGINE WAS THEN REMOVED FOR REPAIR.

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