AAEE 28-2-44 cool trials with reduced area rad exit duct Fitt FXII rud Benson 20-8-44 4S 31-8-44 HAL 6-2-45 recat E SOC 3-9-45 bboc SFU Honiley 7-3-46 engine failed wheels up landing nr Warwick 19-7-46 FA SOC 25-7-46