O M E
Thank you ! .
It was close though. I tried to google it , and that was the only one ( I thought) recognisable.
Such a small rule , that if you said " I flew a test circuit " , that rule didn't apply.
' Grandfathers rule ' .
SO
It Is an ' iniquitous ' rule that targets ( seemingly) one aircraft , out of all the models , they are changing rules , to accommodate , G A aircraft .
spacesailor