# SDR YTRA2020121801

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2020
- Submitted: December 18, 2020
- Operation: Air carrier
- Aircraft: [N663RL](https://openairdocs.org/aircraft/N663RL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53479
- Aircraft time: 16,779 hours, 18,563 cycles
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Gearbox
- Part number: 407040006107FM1
- Part serial: A112
- Condition: Making Metal
- Location: Main
- Part time: 24,348 hours
- 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/YTRA2020121801

## Discrepancy

WHILE RETURNING TO AN ONSHORE BASE LOCATION THE CAUTION PANEL INDICATED A MAIN GEARBOX CHIP LIGHT.  THE PILOT PERFORMED A PRECAUTIONARY LANDING ONSHORE AT A SUITABLE LOCATION PRIOR TO ARRIVING AT THE INTENDED BASE.

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