# SDR 2017F00005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2016
- Submitted: December 9, 2016
- Operation: General aviation
- Aircraft: [N293AM](https://openairdocs.org/aircraft/N293AM), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 54617
- Aircraft time: 355 hours, 1,212 cycles
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Nut
- Part number: 407010106103
- Part serial: TI1185
- Condition: Stuck
- Location: M/R Mast
- Part time: 355 hours, 1,212 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2017F00005

## Discrepancy

MAIN ROTOR MAST NUT FOUND SEIZED TO MAST.  ULTIMATELY REQUIRED APPROX. 2000 FT-LBS TORQUE TO REMOVE.

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