# SDR 2020F00280

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2020
- Submitted: January 23, 2020
- Operation: General aviation
- Aircraft: [N91025](https://openairdocs.org/aircraft/N91025), registered now
- Make and model: Cessna T207
- Registry model: [Cessna T207](https://openairdocs.org/model/cessna-t207) (OpenAirDocs)
- Aircraft serial: 20700016
- Aircraft time: 6,435 hours
- Engine: Cont TSIO520*
- Engine time: 441 hours
- Propeller: Hartzl PHCJ3YF1
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Lifter
- Part number: 658077
- Condition: Spalled
- Location: Engine
- Part time: 441 hours
- Stage of operation: NR
- 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/2020F00280

## Discrepancy

REMOVED ALL HYDRAULIC LIFTERS TO INSPECT FOR SPALLING, DISCOVERED BADLY SPALLED EXHAUST LIFTER ON CYLINDER #4.  INSPECTED CAM IN ACCORDANCE WITH CONTINENTAL SERVICE DIRECTIVE SID05-1B, INSTALLED NEW LIFTER AND WILL INSPECT CAM AGAIN IN 100 HOURS.  IT IS DOUBTFUL THAT THIS 1900 HOUR ENGINE WILL MAKE TBO BEFORE NEEDING A NEW CAM.  WE ARE NOW INSPECTING LIFTERS EVERY 200 HOURS.

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