# SDR CA120109011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2011
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Bell 206L-4
- Registry model: [Bell 206L-4](https://openairdocs.org/model/bell-helicopter-textron-canada-206l-4) (OpenAirDocs)
- Aircraft time: 4,137 hours
- Engine: Allsn 250C30P
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Seal
- Part number: 406340105101
- Condition: Leaking
- Location: T/R Gearbox
- Part time: 454 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA120109011

## Discrepancy

(CAN) GARTER SPRING OF SEAL HAD WORN THROUGH THE RUBBER SEAL LIP AND WAS CHAFING INTO THE SPEEDI-SLEEVE.  THE CHIP PLUG HAD ACCUMULATED BLACK SLUDGE GREATER THAN NORMAL AND THE COLOR OF THE OIL WAS OFF.

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