# SDR 2010FA0000248

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2010
- Submitted: March 19, 2010
- Operation: General aviation
- Aircraft: N723FW
- Make and model: Cessna U206G
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (OpenAirDocs)
- Aircraft serial: U20606714
- Engine: Cont IO550F
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Lifter
- Part number: 653877
- Condition: Spalled
- Location: Nr 5 Cylinder
- Part time: 609 hours
- 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/2010FA0000248

## Discrepancy

LOW COMPRESSION NR 5 CYLINDER - BURNED VALVE.  FOUND BOTH LIFTERS FOR INTAKE AND EXHAUST SPALLED.  LOOKED AT OTHER LIFTERS IN ENGINE WITH A BORESCOPE AND FOUND SEVERAL OTHER LIFTERS IN ENGINE WITH SAME SPALLING DEFECT.  PN ON LIFTERS IS 653888 AND 653877.  THESE PN LIFTERS ARE DESIGNATED AS NOT AFFECTED BY MSB 09-8 OR AD 2009-24-52.

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