Thanks for those points, TURIN, robin and Snyggapa. I think, though, robin, that the URL you give is for the whole (585pp) doc. The seven-pager (actually 8) is at
https://ec.europa.eu/commission/site...eclaration.pdf
Anyway, we don't seem to be much further ahead - although the Articles 27 and 28 that you adduce, TURIN, do perhaps suggest that aircrew qualifications may not immediately become invalid after 29 March, as previously suggested. Does anyone else think that's what Articles 27 and 28 mean?
But there seems to be no mention of whether UK-built parts (including Airbus wings) will lose their certification, and aircraft will be grounded all over the place.
And, in any case, the utter political chaos here in Britain might mean that the whole 585pp will be rendered null and void before long, I suppose....
airsound