# SDR CA990119004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Skrsky S61N
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Gear
- Part number: S613522017003
- Condition: Cracked
- Location: M/R Gearbox
- Component: S61252060004
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990119004

## Discrepancy

(CAN) RING GEAR WAS REMOVED TO REPAIR A STUD IN THE LOWER HOUSING.  ON INSPECTION, A CRACK WAS FOUND IN THE LOWER FLANGE OF THE RING GEAR.  THE RING GEAR WAS REPLACED.

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