# SDR AC2A2021052501

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2021
- Submitted: May 25, 2021
- Operation: Air carrier
- Aircraft: [N392JS](https://openairdocs.org/aircraft/N392JS), registered now
- Make and model: Skrsky S92A
- Aircraft serial: 920249
- Aircraft time: 5,413 hours, 5,298 cycles
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Attach Bolt
- Part number: NAS565C33
- Condition: Sheared
- Location: M/R Hub
- Component: Hub, Skrsky
- Component part number: 9210915000043
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AC2A2021052501

## Discrepancy

DURING AIRCRAFT SHUTDOWN THE UPPER ANTI-FLAP STOP RETAINING BOLTS SHEARED AND THE ANTI-FLAP STOP AND A PORTION OF THE SHIM PACK DEPARTED THE MAIN ROTOR HUB ASSEMBLY.

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