Antonov An 990

The An-990 was introduced as a conceptual "ultra-heavy" air tanker/transport designed for large-scale, world-wide, or catastrophic fire fighting. Conceptualized in the context of advanced flight simulations, this aircraft exists as a "what-if" scenario, designed to carry fire-retardant capacities that no conventional aircraft can match.

6,000 metric tonnes (13.2 million lbs). This is roughly 120 times heavier than a standard Boeing 737. antonov an 990

The flight deck sits so high off the ground that pilots frequently misjudge their altitude and land short of the runway. The An-990 was introduced as a conceptual "ultra-heavy"

The Anglo-French Concorde and the Boeing 747 pushed the limits of 1960s technology. The An-225 pushed the limits of 1980s Soviet titanium welding. An would require 22nd-century materials science. This is why Antonov never built it. This is roughly 120 times heavier than a standard Boeing 737

At its maximum weight of 6000 tonnes, the aircraft requires a high speed for rotation, typically utilizing flaps 3 or 4, rotating around 145+ kias (knots indicated airspeed).