Designation applied to aircraft modified with a 650 shp Garrett AirResearch turboshaft and other updated equipment.
Aircraft modified by Aviation Specialties and produced and marketed by Helitec with a 650SHP Garrett AiResearch TPE-331-3U-303 turboshaft and updated equipment. Unknown number converted. 
List of Operators of S-55T |
Construction Numbers |
| C/N | Year | History | ||
|---|---|---|---|---|
