My perspective is that, on the other side of the path of change you will find progress.
Yes there will be uncertainty or scare, judgement or rejection, and indeed struggle or difficulty and hardship in the aftermath of March 31 but there is just enough experience and knowledge in the leadership of this industry and country to steady the ship, and this is the power that underpins progress. Also, you have to understand how strongly attached this country is to this industry. All the consequences would have been thought through even before the referendum itself.
IMHO Yes we know the answers; that single trade deal will be replaced by multiple deals between the UK and individual EU states for movement, et cetera. I'm satisfied that carriers from the mainland EU find connections in the UK profitable which taken with other factors would be enough to trigger such trade deals. If it works for the UK with other countries like Australia, Switzerland, why shouldn't we be optimistic?