@Rwy In Sight
was covered by two MSSRs, Rhodes and Karpathos. According to the AIP Greece these
radars 'see' from ~7000 ( for KUMBI area I believe at least FL100 ) up.
when - aircraft/radar target reached that floor - was according to HCAA statement at 00:29:40 Z.
Interesting till now, they did not say, if they called immediately after aircraft departed assigned altitude or if the call was just for UIR handover and then they realized it was descending.