Blimey, slight throw back there, just saw N166G on ADSB approaching Biggin Hill - remember it as a P-51D which Doug Arnold had at Blackbushe over 40 years ago - recall it there in 1980 with a P-47D when a school friend's father kindly diverted on route back to school from a day out at the Greenham Common Air Tattoo. The P-51 went via Stephen Grey to La Ferte Alais and was lost in fatal crash in France in 1998. Appears to be under restoration in the US now.
The present N166G is a DA-40!