# SDR 2010FA0001199

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 24, 2010
- Submitted: November 24, 2010
- Operation: General aviation
- Aircraft: [N72LR](https://openairdocs.org/aircraft/N72LR), registered now
- Make and model: Beech B36TC
- Registry model: [Beech B36TC](https://openairdocs.org/model/beech-b36tc) (OpenAirDocs)
- Aircraft serial: EA676
- Engine: Cont TSIO520UB
- Engine time: 1,293 hours
- Propeller: Hartzl PHCC3YF1
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Camshaft
- Part number: 629726
- Condition: Spalled
- Location: Engine
- Part time: 1,293 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2010FA0001199

## Discrepancy

DURING CYLINDER REPLACEMENT DUE TO LOW COMPRESSION FOUND NR3 & NR4 INTAKE LOBE ON CAM WORN AND SPALLING.  ENGINE REMOVED FOR CAM REPLACEMENT OR ENGINE O/H.  SPALLING OF LIFTER FACES ALSO NOTED.

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