New MRO line will serve over 300 PT6C-67C-powered AW139 helicopters globally SINGAPORE, Feb. 19, 2024 /PRNewswire/ -- (SINGAPORE AIRSHOW) -- Pratt & Whitney Canada announced today it will expand its maintenance, repair and overhaul (MRO) capabilities by creating a new overhaul line in Singapore for its PT6C-67C engines, which power the Leonardo AW139 medium-twin helicopter. Pratt & Whitney is an RTX (NYSE: RTX) business. Pratt & Whitney Canada adds a new MRO line for the PT6C-67C helicopter engine at its Si ...