I would certainly go along with JF's explanantion of the vane cut out etc...he is highly qualified to speak on the subject
I am sure JF will recognise the location of this pic
The very first Hawk - XX154 is still earning a living with ETPS,this pic was taken when we were invited back to dunsfold in 2005 and clearly shows the missing section of flap vane !
The 2nd pic shows 'Fred Suttons rear end' (extended fairing below/behind rudder) and also an early version of the extended tail cone - both these mods were to improve directional stability !
