A RAF Boeing RC-135W (reg. ZZ664), departed from Souda Bay AB, is carrying out this morning a surveillance mission over the Black Sea.
They are not tracked in the area RAF Typhoons usually escort Rivet Joits operating over the Black Sea on all missions.
The presence, however, of an RAF Airbus KC.2 (reg. ZZ333 – callsign KAYAK31), which took off from RAF Akrotiri, orbiting over eastern Romania, suggests that other assets are also involved in the mission, most likely a pair of Typhoons taken off from Cyprus with the ADS-B transponder switched off