I have served operationally on 4 types....4 Eng Piston, 2 different fast jets and an ISTAR. I don't think many other people have serve 'operationally' on 4 types....but maybe this thread will prove me wrong!
The origin of my name should be obvious to anyone who spent any time on UK ISTAR aircraft, but for those who have not, it is a play on the nickname for a particular piece of electronics that was fitted to two of our ISTAR aircraft (but only one still in service).
A move south and two more aircraft types but the same roles makes a total of four (but both types still in service)! 10 jet engines and 4 props.
Y_G