# SDR 2026FA0000648

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2026
- Submitted: August 17, 2026
- Operation: General aviation
- Aircraft: [N4247V](https://openairdocs.org/aircraft/N4247V), registered now
- Make and model: Skrsky S58JT
- Aircraft serial: 581547
- Aircraft time: 14,558 hours, 10,989 cycles
- Engine: Pwa PT6T3
- Engine time: 44 hours, 68 cycles
- System (JASC): [6300 · Main Rotor Drive System](https://openairdocs.org/jasc/6300)
- Part: Coupling
- Part number: S1635920033
- Condition: Cracked
- Location: Zone 100
- Part time: 14,558 hours, 14,558 cycles
- Stage of operation: LD
- How discovered: V
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000648

## Discrepancy

CRACKED AROUND METAL ON COUPLING

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