# SDR CA021021004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2002
- Submitted: October 28, 2002
- Operation: Air carrier
- Make and model: Bolkms BO105CBS
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bearing
- Part number: 4638302023
- Condition: Making Metal
- Location: Input Pinion
- Component: Transmission, 4638001001
- 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/CA021021004

## Discrepancy

(CAN) RECEIVED WITH REPORT OF METAL CONTAMINATION.  TEARDOWN REVEALED SUBJECT BEARING HAD PEELING ON ONE BALL ONLY.  AREA OF MATERIAL LOSS WAS 30 PERCENT.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.