# SDR EVCA20150717001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2015
- Submitted: July 17, 2015
- Operation: Air carrier
- Aircraft: [N416AE](https://openairdocs.org/aircraft/N416AE), registered now
- Make and model: Bell 206L-4
- Registry model: [Bell 206L-4](https://openairdocs.org/model/bell-helicopter-textron-canada-206l-4) (OpenAirDocs)
- Aircraft serial: 52403
- Aircraft time: 2,508 hours
- Engine: Allsn 250C30P
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Mast
- Part number: 206040535109
- Part serial: N1550
- Condition: Corroded
- Location: Main Rotor
- Part time: 2,658 hours, 12,950 cycles
- Component: Mast Assy, Bell
- Component part number: 206040014107
- 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/EVCA20150717001

## Discrepancy

INTERIOR DIAMETER SURFACE OF MAST POLE SHOWING SIGNS OF CORROSION UNDERNEATH THE PAINT COATING.

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