Комплекс А-100 совершил первый полет с включенным локатором

The A-100 prototype is currently flight testing at TANTK Beriev in Taganrog, but no details have been revealed about the progress of the effort.

Maiden flight of the first A-100 at Taganrog on November 18, 2017.

А-100ЛЛ

The Beriev A-100 model revealed during a Russian TV programme on February 9, 2014.

Beriev is designing the A-100 to supplement - and in future replace - the A-50U.
A model of the Beriev A-100 strategic airborne early warning and control aircraft showing its new and improved features; 1 - rotating active phased array radar antenna; 2 - satellite communications antennas; 3 - in-flight-refuelling probe; 4 - electronic reconnaissance/countermeasures antenna; 5 - renewed platform with PS-90A-76 engines and new wing.

The A-100's Premier S-band radar antenna is housed within the rotodome opposite the IFF and radio antenna.