Light rotorcraft maker Robinson Helicopter and biotechnology firm United Therapeutics recently ground tested an R44 modified with hydrogen fuel cells, and the companies say test flights are imminent.

ROBINSON HELICOPTER CO., WHOSE R22 AND R44 HELICOPTERS are powered by piston engines, continues to gain market share against turbine-powered helos. In the first six months of the year, Robinson sold ...

KEY BISCAYNE, Fla. — A Robinson R-44, a four-seat light helicopter, crashed into the water on Saturday afternoon near Key Biscayne. According to The Federal Aviation Administration, the pilot, who was ...

A tour company helicopter crashed off the Hawaiian island of Kauai, police said, killing one person and leaving two missing in the latest in a series of crashes to plague the industry in recent ...

All the Latest Game Footage and Images from Microsoft Flight Simulator X: Steam Edition - Robinson R44 The R44 is a lightweight, versatile, piston-powered four seat helicopter renowned for its ...