# SDR CA140424014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2014
- Submitted: March 12, 2015
- Operation: General aviation
- Make and model: Skrsky S61N
- Aircraft time: 48,520 hours
- Engine: Ge CT581402
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Housing
- Part number: S6135200117
- Condition: Cracked
- Location: Transmission
- 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/CA140424014

## Discrepancy

(CAN) CRACKS WERE FOUND ON QTY 4 OF THE LUGS THAT ATTACH THE TOP HOUSING TO THE MAIN GEAR BOX.  THE CRACKS EXTEND FROM OTBD EDGE TO SCREW HOLES THAT ATTACH A REWORK SHIM TO THE LOWER SURFACE OF THE HOUSING. THE REWORK WAS CARRIED OUT IAW RDC P-RH98-126/D, AND INCORPORATED DURING AN O/H NOTE: MFG MM  SA 4045-80, CHAPTER 65-13-0 ALLOWS FOR UNLIMITED CRACKS IN THIS AREA.

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