# SDR M3XA2022101300617

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2022
- Submitted: October 13, 2022
- Operation: General aviation
- Aircraft: [N408UT](https://openairdocs.org/aircraft/N408UT), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53808
- Aircraft time: 5,283 hours, 24,768 cycles
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Transmission
- Part number: 407040006115FM
- Part serial: A189
- Condition: Making Metal
- Location: Main
- Part time: 17,154 hours
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/M3XA2022101300617

## Discrepancy

PILOT PERFORMED A PRECAUTIONARY LANDING SAFELY WITH A PATIENT ON BOARD FOR A MAIN TRANSMISSION CHIP INDICATION.  PATIENT TRANSFERRED BY GROUND.  MECHANIC INSPECTED MAIN TRANSMISSION CHIP DETECTORS AND FOUND SMALL CHIPS.  MECHANIC FLUSHED THE TRANSMISSION AND RESERVICED.  PERFORMED A 20 MINUTE GROUND RUN UNDER POWER.  NO FURTHER DEFECTS NOTED.  ACFT RELEASED FOR RETURN TO SERVICE.

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