The IL-78MK (convertible) refueling tanker was developed based on the IL-78M aircraft. The IL-78MK is designed
for the in-flight refueling of up to three aircraft of various types. The aircraft can be refueled in the air
by day or night in the appropriate conditions of visibility. On the ground the airplane is capable of refueling
of up to four airplanes simultaneously.
The airplane can be reequipped on site in operational conditions and then operate as a military transport
aircraft for airdrop and air landing of cargoes and personnel.