# SDR 95ZZZX1352

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N1099T
- Make and model: Skrsky S58T
- Aircraft serial: 581646
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Shaft
- Part number: S1635200592
- Condition: Cracked
- Location: Transmission
- Part time: 2,499 hours
- Component: S16352000017
- 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/95ZZZX1352

## Discrepancy

TRANSMISSION DISASSEMBLED FOR OVERHAUL.  PERFORMED MAGNAFLUX INSPECTION OF MAST FOLLOWING STRUCTURAL FAILURE IN ANOTHER AIRCRAFT; .3750 INCH CRACK INDICATION FOUND BEGINNING AT DOWEL PIN HOLE TO UNDERCUT AT MAST BASE.  AIRCRAFT HAS BEEN LOGGING FOR THE LAST 1146 HOURS.

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