# SDR 2010FA0001094

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 2010
- Submitted: October 8, 2010
- Operation: General aviation
- Aircraft: [N46261](https://openairdocs.org/aircraft/N46261), registered now
- Make and model: Cessna 152
- Registry model: [Cessna 152](https://openairdocs.org/model/cessna-152) (OpenAirDocs)
- Aircraft serial: 15283024
- Engine: Lyc O235L2C
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Part number: ECL011ST
- Part serial: 590352
- Condition: Cracked
- Location: Nr 2
- 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/2010FA0001094

## Discrepancy

(LW5R) 4 CYLINDER ASSEMBLIES WERE INSTALLED AT ENGINE TT OF 5324.4 HRS.  CYLINDER NR 2 FAILED COMPRESSION TESTING AT ENGINE TT OF 5757.1 AND A CRACK IN THE CYLINDER HEAD NEAR THE EXHAUST VALVE WAS DISCOVERED.  THE CYLINDER HAD 432.7 TIS ON THIS ENGINE.  4 PISTON PINS (PN LW13445) AND 8 PISTON PIN PLUGS (PN SL 11625) WERE INSTALLED AT THE SAME TIME AS THE CYLINDER ASSEMBLIES.  AT CYLINDER REMOVAL, 1 PISTON PIN PLUG IN THE NR 2 CYLINDER WAS SIGNIFICANTLY WORN AND SCORING WAS FUND ON THE CYLINDER WALL.

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