# SDR 20070125

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2007
- Submitted: January 25, 2007
- Operation: General aviation
- Aircraft: [N622](https://openairdocs.org/aircraft/N622), registered now
- Make and model: Robsin R44RAVENII
- Aircraft serial: 10003
- Aircraft time: 1,167 hours
- Engine: Lyc IO540AE1A5
- Engine time: 1,167 hours
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Gear
- Condition: Worn
- Location: Engine
- Stage of operation: IN
- 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/20070125

## Discrepancy

DURING INSPECTION OF THE ENGINE WHILE REPLACING THE CRANKSHAFT IAW SB 569A, IT WAS OBSERVED THAT (PN 13519647) CRANKSHAFT GEAR WAS EXCESSIVELY WORN.  THE GEAR WAS REPLACED WITH A NEW PART.

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