UK EU brexit deal now done does this mean the UK will still be in EASA

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Originally Posted by TURIN

Correct. EASA regulations are enforced by the ECJ. One of the red lines for the leave campaign was the ECJ would have no jurisdiction over UK law.
We will return to the way things were pre 2003.

But the ECJ also has no jurisdiction over Norway and Switzerland, so can't be a stumbling block.