# SDR ALG2002F00050

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2002
- Submitted: July 12, 2002
- Operation: Air carrier
- Aircraft: [N343AL](https://openairdocs.org/aircraft/N343AL), registered now
- Make and model: Bell 206L-3
- Registry model: [Bell 206L-3](https://openairdocs.org/model/bell-206l-3) (OpenAirDocs)
- Aircraft serial: 51372
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Gear
- Part number: 23071895
- Part serial: NN147313
- Condition: Contaminated
- Location: Gearbox
- Part time: 1,037 hours
- 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/ALG2002F00050

## Discrepancy

UPON DISASSEMBLY AND INSPECTION OF PARTS DUE TO METAL CONTAMINATION.  PINION GEAR HAS EXCESSIVE GALLING ON GEAR TEETH DUE TO IMPROPER MACHINING AND MESHING WITH T/M GEAR.  BOTH PARTS WERE SCRAPPED AND SENT FOR WARRANTY CREDIT.  ASSURE PROPER MACHINING AND MESHING OF GEAR TEETH.

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