In the 1980´s Pratt & Whitney developed the YF119 prototype engine, to meet the US Air Force ( and at this time Navy ) requirements, for the Advanced Tactical Fighter competition. The first time it was used in 1990 by the Lockheed Martin YF-22 and the Northtrop YF-23 competitor. To reduce maintenace for the engine 40 % fewer parts were used in comparison to at this time conventional engines. The F119 engine allows the F-22 Raptor to Supercruise, what means the F-22 is able to fly faster then the sound without use of Afterburner ( up to Mach 1.82 ), this results in to better fuel effectiveness and an increased combat radius. The engine was selected in 1991 for the F-22 Raptor, the winner of the Advanced Tactical Fighter competition.