# SDR E5ZR20180613001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2018
- Submitted: June 13, 2018
- Operation: General aviation
- Filed by: [Signature Engines, repair station E5ZR316Y](https://openairdocs.org/faa-repair-station/E5ZR316Y/signature-engines.md) (OpenAirDocs)
- Aircraft: [N206S](https://openairdocs.org/aircraft/N206S), registered now
- Make and model: Beech 95-B55
- Registry model: [Beech 95-B55](https://openairdocs.org/model/beech-95-b55) (OpenAirDocs)
- Aircraft serial: TC873
- Aircraft time: 3,748 hours
- Engine: Cont IO520E
- Engine time: 951 hours
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Connecting Rod
- Condition: Failed
- Location: Rt Engine
- Stage of operation: DE
- How discovered: O
- Nature of condition: Y, T
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/E5ZR20180613001

## Discrepancy

AFTER TEARING DOWN THE ENGINE IN QUESTION IT IS OUR OPINION THAT THE FAILURE WAS DO TO OIL STARVATION OF THE NR 5 CYLINDER CONNECTING ROD CAP FOR UNKNOWN REASONS.  THIS CAUSED FAILURE OF THE ROD CAP BOLTS.  THE CAP BOLTS STRETCHED, SNAPPED AND THEY SHOW SIGNS OF BURN MARKS.

---
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.