# SDR CA100706008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2010
- Submitted: January 4, 2011
- Operation: Air carrier
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Duplex Bearing
- Part number: 407340032101
- Condition: Failed
- Location: M/R Transmission
- Part time: 6 hours
- Component: Transmission, Bell
- Component part number: 407040006115
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA100706008

## Discrepancy

(CAN) MAIN TRANSMISSION CHIP LIGHT ILLUMINATED DURING FERRY FLIGHT EN ROUTE, EVENT OCCURRED APPROX 2 HRS AFTER TAKEOFF.  MISSION ABORTED AND AIRCRAFT LANDED IN A FIELD . UPON DISSASSEMBLY OF THE TRANSMISSION, DUPLEX BEARING 407-340-032-101 WAS FOUND INCORRECTLY INSTALLED BACK TO FACE INSTEAD OF FACE TO FACE AS REQUIRED PER DESIGN.

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