The Short Stirling had particularly challenging flying characteristics on takeoff and landing, even in comparison with other tail-wheeled contemporaries. After a series of serious accidents and total aircraft losses involving uncontrolled ground loops on takeoff, the Royal Air Force implemented a special training and certification programme for all prospective Stirling pilots. Proper takeoff technique involved feeding in right engine throttle during the initial 20 seconds of the takeoff run until the rudder became effective for control. If all four throttles were advanced simultaneously, the aircraft would swing to the right, become uncontrollable and often collapse the landing gear which could be disastrous if the aircraft was loaded with bombs and fuel.