Pratt & Whitney Canada (PWC, Booth C10807) has introduced the new PT6A-140A. Featuring an 867-hp-rated gearbox and a 1,100-hp thermal capability, the new engine is tailored to the needs of utility aircraft operators in hot/high conditions.

“It’s been developed to meet the needs of customers who currently own PT6A-powered aircraft, but want an extra boost in performance,” said Nicholas Kanellias, general manager, general aviation programs. The new engine will be able to deliver 867 shp to 106 deg F at sea level, he added.

“That’s 15 percent more power at 5-percent lower SFC [specific fuel consumption] relative to existing engines in this space,” he said. “It’s really designed to bring greater performance into the smaller PT6A space, especially where people need hot and high capabilities.”

Airframes suitable for the PT6A-140A upgrade are the Caravan, King Air, Twin Otter and some agricultural aircraft currently using the PT6A-27 and -34.

“For example, the dash 34 engine, which is used in many utility aircraft installations, has a gearbox certified at 750 horsepower for takeoff,” he said. “We’re boosting easily 15 to 20 percent power and not losing any of it in terms of a hot day pinch point.”

In addition to its performance increases, Kanellias highlighted the PT6A-140A’s dual-port exhaust system. The twin-port design permits a different orientation of the exhaust, which allows for alternative aerodynamic and design improvements on the aircraft. In particular, OEMs get more flexibility in the engine installation and overall design.

Kanellias said the new PT6A-140A is another example of PWC doing what it has done with the PT6 family for nearly 50 years, making improvements to provide operators an engine that better meets their specific needs. “We’re always working to improve the engine’s design, materials and manufacturing to provide the best possible performance,” he said. “The PT6 of 25 or more years ago is not the PT6 of today,” he concluded. “Technology- and capability-wise, the engines of today are examples of the best of available materials and technologies. The only thing that is the same is our commitment to quality, reliability and meeting our customers’ needs.”