Sukhoi Su-29 flight skills of military and civil pilots. Sukhoi Su-29 The Sukhoi Su-29 is a Russian two-seat aerobatic aircraft with a 268 kW (360 hp) radial engine. It was designed based on the Su-26 and inherited most of the design and technical features of its predecessor. Due to wide use of composite materials, which make up as much as 60% of the Su-29's aircraft structure, the empty weight is increased by only 50 kg (110 lb) over the single-seat Su-26's empty weight. The Su-29 is used for initial pilot aerobatics education, flight training, and participation of pilots in aerobatics competitions and
Sukhoi Su-27 by the Japan Ministry of Defense. Russia denied the incursion, saying the jets were making routine flights near the disputed Kuril Islands. In another encounter, on 23 April 2014 an Su-27 nearly collided with a United States Air Force Boeing RC-135U over the Sea of Okhotsk. Russia plans to replace the Su-27 and the Mikoyan MiG-29 eventually with the Sukhoi Su-57 stealth fifth-generation multi-role twin-engine fighter. A squadron of Su-27SM3s was deployed to Syria in November 2015 as part of the Russian military intervention in the Syrian Civil War. Ethiopian Su-27s reportedly shot down two Eritrean MiG-29s and damaged another