Whilst descending, I (EU) had never heard of any flight operation that would keep STD until the TL, all re-set immediately with clearance to an altitude.
Plus, you can add all of the airlines operating in the old East block.
Going up, different story.
Deleted this part ...
Last edited by FlightDetent; 4th Apr 2017 at 08:44.
Reason: managed to confuse myself