# SDR 2012FA0000267

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2012
- Submitted: May 4, 2012
- Operation: General aviation
- Aircraft: [N407LG](https://openairdocs.org/aircraft/N407LG), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53143
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Shaft
- Part number: 407040416103
- Condition: Corroded
- Location: T/R Gb Output
- Part time: 3,687 hours
- Component: Gearbox, Bell
- Component part number: 407040400117FM
- 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/2012FA0000267

## Discrepancy

DURING 60 MONTH INSPECTION FOUND PITTING ON OUTPUT SHAFT ABOUT 4 INCHES INBD FROM END OF SHAFT.  SHAFT DETERMINED TO BE UNSERVICEABLE.

---
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.