# SDR ALGA2012052401

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2012
- Submitted: May 24, 2012
- Operation: Air carrier
- Aircraft: [N527AL](https://openairdocs.org/aircraft/N527AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53211
- Aircraft time: 15,976 hours
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Bearing
- Part number: 406040036107
- Part serial: 75062
- Condition: Corroded
- Location: Mast
- Component: Mast Assy, Bell
- Component part number: 407040011107FM
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ALGA2012052401

## Discrepancy

MAIN ROTOR MAST HAS BEARING CORROSION BEYOND LIMITS.

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