# SDR FF6R2016FA0000050

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2016
- Submitted: February 4, 2016
- Operation: General aviation
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Gearbox
- Part number: 350A33020005
- Part serial: MA0829
- Condition: Corroded
- Location: Tail Rotor
- Part time: 2,187 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/FF6R2016FA0000050

## Discrepancy

RECEIVED TAIL ROTOR GEARBOX AFTER REPAIR.  DURING RECEIVING INSPECTION CORROSION NR CORROSION PITTING WAS NOTED ON THE OUTPUT SHAFT IN SEVERAL AREAS ALONG THE SHAFT. THIS IS A NO DAMAGE AREA AS DEFINED O/H MANUAL, MRV 34, 65.20.20.820. THE GEARBOX WAS REJECTED AND PLACED BACK INTO SUPPLY AWAITING DISPOSITION.

---
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.