yes, I am sure they would capitulate anything too, but it doesn't seem to be a case of having anything to capitulate.
if we are no longer under the juristriction of the European courts, then UK air space closes, until our own ASA is up and running, but that will take years.
Or we beg to be allowed to remain under the juristriction of the European court, and part of the EASA, which is basically begging to cancel Brexit.
Yes, I think we will beg to remain under the jurisdiction of the ECJ for EASA and for many other arrangements too, eg medical regulations. I think this has been quietly mooted in some plans already.
I suspect this will either be agreed just before March, or there'll be another event (GE or decision to hold a vote on the deal) which will allow the transition period to be extended.
If the govt really do push it to the brink and flights are grounded then they will have no choice but to rush very quickly with their begging bowl and ask to be part of EASA because there's no way people with cancelled holidays are not going to be making a huge amount of fuss. The news programmes are full of grumbling passengers when planes are delayed after bad weather.
I really can't see any situation where they would allow us to have no flights to Europe or the US for months. If they leave it until people are rioting in the airports they will probably have to give in to whatever the EU says in order to have access to EASA.
If they had been planning for a no-deal for the start and had immediately started setting up the UK's own international aviation regulations, then I might think leaving EASA was a serious possibility, but they haven't and I think enough MPs know this is the case to avert no-deal.
However, things since the referendum have been handled by the government even more badly than I had thought possible so I guess anything is possible. Luckily, I am planning a ferry holiday that only needs deposit paying until end of June.