# SDR HXS2004F00004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2004
- Submitted: November 9, 2004
- Operation: Air carrier
- Aircraft: [N6302Y](https://openairdocs.org/aircraft/N6302Y), registered now
- Make and model: Snias AS350B2
- Aircraft serial: 9007
- Engine: Tmeca ARRIEL1D1
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bearing
- Condition: Making Metal
- Location: Mgb
- Part time: 2,261 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HXS2004F00004

## Discrepancy

PILOT REPORTED MGB CHIP LIGHT.  INVESTIGATION REVEALED METALIC CHIPS ON THE BEVEL REDUCTION GEAR BOX THAT EXCEEDED SERVICABILITY STANDARDS.  REMOVED GEARBOX AND FOUND EPICYCLIC HAS A BAD BEARING WHICH IS THE SOURCE OF THE METAL.  SENT EPICYCLIC AND BEVEL GEAR BOX FOR REPAIR OF CYCYLIC AND INSPECTION OF BEVEL GEAR BOX FOR CROSS METAL CONTAMINATION.

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