Originally Posted by
DaveReidUK
Reminds me of when the RAF was looking for a new trainer (the role that the Tucano eventually filled). The RFP specified that the aircraft should be capable of flying at 240 KTAS.
Apparently the RAF can only navigate when flying at multiples of 60 kts.
Trouble is, if you wanted to fly 10kts faster you'd have to learn the 1:50 Rule
YS