In these minutes a Turkish Navy ATR P-72MPA (reg. TCB-752 – callsign MARTI02) from NAS Cengiz Tope is operating a mission over the Central Aegean.
The aircraft made several orbits north of Kalogerso islets at a lower altitude but always outside the Greek airspace.
Usually this kind of missions are carried out without asking clearence to the Greek ATC even if they take place within the Athens FIR.