# SDR AU981408

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 26, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Bell 206L-1
- Registry model: [Bell 206L-1](https://openairdocs.org/model/bell-helicopter-textron-206l-1) (OpenAirDocs)
- Engine: Allsn 250C30P
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Support
- Part number: ADKP00672
- Condition: Cracked
- Location: T/R Gearbox
- Component: 20603300411A
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU981408

## Discrepancy

(AUS) TAIL ROTOR GEARBOX SUPPORT CRACKED ON LT SIDE.  CRACK STARTS AT A COUNTERSUNK RIVET AND RUNS THROUGH TO THE UPPER SKIN EDGE.  SUBMITTER SUSPECTS CAUSED BY INCORRECT SHIMMING BETWEEN THE SKIN AND THE BELLCRANK LONGERON.

---
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.