# SDR PNB2011F00005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2011
- Submitted: June 10, 2011
- Operation: Air carrier
- Aircraft: N910TA
- Make and model: Cessna U206G
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (OpenAirDocs)
- Aircraft serial: U20604102
- Engine: Cont IO520F
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: AEC631397
- Part serial: 6096915
- Condition: Cracked
- Location: Nr 2
- Part time: 1,037 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/PNB2011F00005

## Discrepancy

LOW COMPRESSION NR2 CYLINDER ON 100HR INSPECTION.  FOUND BLOWBY COMING AROUND FINS IN THE HEAD.  CYLINDER WAS CRACKED BETWEEN SPARK PLUG HOLE AND INTAKE VALVE.  ALL PREVIOUS COMPRESSION CHECKS WERE IN THE 70/60 RANGE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.