# SDR CA190215003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2019
- Submitted: August 13, 2020
- Operation: General aviation
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bevel Gear
- Part number: 407040006111
- Condition: Broken
- Location: Main Rotor
- 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/CA190215003

## Discrepancy

(CAN) IT WAS REPORTED TO BELL (IN 2 STEP): -FEB 12TH:CUSTOMER HAD A CHIP LIGHT EVENT IN FLIGHT, CLEANED THE CHIP DETECTORS, REPLACED THE OIL AND FILTER, AND PERFORMED A PENALTY RUN. THE AIRCRAFT THEN DEPARTED AND LANDED BECAUSE OF A SECOND CHIP EVENT, ROUGHLY 8 HOURS AFTER THE SERVICING HAD BEEN ACCOMPLISHED. THE AIRCRAFT WAS TRUCKED FOR REPLACEMENT OF THE MAST AND TRANSMISSION  -FEB 8TH:FROM APPROVED MAINTENANCE ORGANIZATION: WE RECEIVED TRANSMISSION ASSEMBLY PART NUMBER 407-040-006-111. IT WAS REMOVED FROM THE AIRCRAFT FOR INSPECTION DUE TO METAL IN THE OIL. DURING THE INSPECTION, WE FOUND A PIECE OF GEAR TOOTH FROM THE BEVEL GEAR PART NUMBER 407-040-035-101.

---
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.