# SDR CA150424002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2015
- Submitted: August 5, 2015
- Operation: General aviation
- Make and model: Cessna U206E
- Registry model: [Cessna U206E](https://openairdocs.org/model/cessna-u206e) (OpenAirDocs)
- Aircraft time: 12,872 hours
- Engine: Cont IO520F
- Propeller: Hartzl PHCJ3YF1
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Bushing
- Part number: 530658
- Condition: Failed
- Location: Wrist Pin
- Part time: 775 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA150424002

## Discrepancy

(CAN) UPON REMOVING THE NR 5 CYLINDER DUE TO LOW COMPRESSION, THE CONNECTING ROD WRIST PIN BUSHING WAS FOUND CRACKED ALONG THE CURVED AREA OF THE "KEYED" SEAM. AFTER CONSULTATION WITH THE ENGINE O/H FACILITY, THEY RECOMMENDED THAT THE REMAINING 5 CYLINDERS BE REMOVED FROM THE ENGINE AND THE WRIST PIN BUSHINGS BE INSPECTED FOR SIMILAR CRACKING. THE NR 3 AND NR 6 CONNECTING ROD WRIST PIN BUSHINGS WERE FOUND CRACKED AND WERE REPLACED.  THE NR 4 BUSHING WAS NOT FOUND CRACKED, BUT WAS REPLACED AS A PRECAUTIONARY MEASURE. THE NR 1 AND NR 2 WRIST PIN BUSHINGS WERE OF A DIFFERENT STYLE, WERE NOT FOUND CRACKED, AND WERE NOT REPLACED.

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