# SDR HEEA0015058

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N4573B
- Make and model: Bolkms BO105S
- Aircraft serial: S673
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bevel Gear Set
- Part number: 4619210902
- Condition: Spalled
- Location: M/R Gearbox
- Component: 4619002003
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA0015058

## Discrepancy

SPALLING OF M/R GEARBOX GEAR TEETH.  SCRAPPED PARTS AND REPLACED WITH NEW PARTS.

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