Maintenance and Modifications
Engine STC Gives New Life to Old Hueys
Trinity Aviation Services has acquired the STC to install the 1,679-shp Pratt & Whitney PT6C-67D engine into the Bell UH-1H.
Trinity Aviation Services is installing the 1,679-shp Pratt & Whitney PT6C-67D engine into the Bell UH-1H (Huey) platform, a change it says will keep the workhorse running at a significantly lower cost to operators.
Trinity Aviation Services is installing the 1,679-shp Pratt & Whitney PT6C-67D engine into the Bell UH-1H (Huey) platform, a change it says will keep the workhorse running at a significantly lower cost to operators.

British Columbia-based Trinity Aviation Services has acquired the STC to install the 1,679-shp Pratt & Whitney PT6C-67D engine into the Bell UH-1H Huey platform. Trinity’s “Huey Talon” engine installation, which can be accomplished in 30 days, reduces fuel consumption by 30 percent—down to 60 gallons per hour—and increases available high/hot power compared to the stock T53 engine, the company said. Trinity forecasts fuel savings at $144,000 per 600 flight hours.