Originally Posted by
what next
I wouldn't say so because if his alleged colour vision deficiency is a fact, then it would have prevented him from holding both the night and instrument ratings. Anywhere, UK, EASA and FAA. Unless he got an excemption of some kind (I once had a student who fought battles with the authorities for five years before he eventually got his night rating because of colour vision issues).
I’m suggesting that nobody has proved that the colour vision deficiency is a fact.