[11][12] The Okhotnik has been under development since at least 2011, when Sukhoi was selected by the Russian Defense Ministry to lead a programme for a new heavy unmanned reconnaissance and attack drone.

[15] In November 2018, the drone performed first series of taxiing, speeding and stopping tests in fully autonomous mode at a runway of the NAPO plant.

The drone flew for about 20 minutes at an altitude of 600 meters above Chkalov State Flight Test Center in Akhtubinsk, and made several circles around the airfield.

Reportedly the UAV flew autonomously for more than 30 minutes, interacting with the Su-57 to test extending the fighter's radar and target designation range to enable use of long-range air-launched weapons from outside enemy air defenses.

[6] The Okhotnik's design is based on the flying-wing scheme and incorporates use of composite materials and stealth coatings, reducing the drone's radar cross section in flight.

[28] While a S-70 model shown at the 2019 MAKS International Aviation and Space Salon has low-observable apertures, the first prototype's exhaust nozzle is conventional, providing no reduction of infrared signature or radar cross section.

By the time attempts to regain control had been abandoned, the drone had crossed the front line into Ukraine and, subsequently, the Russian Su-57 deliberately shot it down.

Identifiable pieces of the wreckage included a large, fairly intact portion of a wing and burned parts of a UMPB D-30SN glide bomb and a turbofan engine.

[36][37][38] Data from TASS,[14] Ainonline[28]General characteristics Performance Armament Related development Aircraft of comparable role, configuration, and era