Penguin - your questions seem to be based on the assumption that
- Scotland will vote for independence
- AND Scotland will have to spend a year or more outside the EU
- AND Scotland won't sign an interim air transport agreement with the EU (as has happened with Morocco and Israel) or otherwise grant some form of open skies.
To be honest, I think assuming all 3 points is quite a strong assertion - any Scottish transport ministry would be foolish to let all 3 points come into effect.
Scotland's only link to anywhere outside the British Isles is by flying. Loganair and bmi regional are great airlines but will never be able to service Scotland in the way that the country needs. That means Scotland has to have a liberal air transport market with (as a minimum) the rest of the EU or go back to the bad old days of the 1980s with national flag carriers charging a fortune, putting Scotland at a significant disadvantage to the rest of the EU