# SDR AC2A111915

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 5, 2006
- Submitted: January 22, 2007
- Operation: Air carrier
- Aircraft: N427CK
- Make and model: Bell 427
- Registry model: [Bell 427](https://openairdocs.org/model/bell-helicopter-textron-canada-427) (OpenAirDocs)
- Aircraft serial: 56043
- Aircraft time: 2,161 hours
- Engine: Pwc PW207D
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Mast
- Part number: 427040011101
- Part serial: BP5
- Condition: Worn
- Location: Main Rotor
- Part time: 1,734 hours
- 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/AC2A111915

## Discrepancy

DURING MAST RETORQUE, FOUND MAST SPLINES WORN, REPLACED MAST.

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