The Beriev A-50 (NATO reporting name: Mainstay) is a Soviet-origin airborne early warning and control (AEW&C) aircraft that is based on the Ilyushin Il-76 transport plane. Developed to replace the Tupolev Tu-126 "Moss", the A-50 first flew in 1978. Its existence was revealed to the Western Bloc in 1978 by Adolf Tolkachev.[2] It entered service in 1985, with about 40 produced by 1992

A-50
The mission personnel of the 15-man crew derive data from the large Liana surveillance radar with its antenna in an over-fuselage rotodome, which has a diameter of 9 metres (30 ft)[citation needed] Detection range is 650 kilometres (400 mi; 350 nmi) for air targets and 300 kilometres (190 mi; 160 nmi) for ground targets.[3]

The A-50 can control[clarification needed] up to ten fighter aircraft for either air-to-air intercept or air-to-ground attack missions. The A-50 can fly for four hours with a range of 1,000 kilometres (620 mi; 540 nmi) from its base, at a maximum takeoff weight of 190 metric tons (420,000 lb). The aircraft can be refuelled by Il-78 tankers.[citation needed]

The radar "Vega-M" is designed by MNIIP, Moscow, and produced by NPO Vega. The "Vega-M" can track up to 150 targets simultaneously within 230 kilometres (140 mi; 120 nmi). Large targets, like surface ships, can be tracked at a distance of 400 kilometres (250 mi; 220 nmi).[4]

The aircraft entered service with the 67th Independent Aviation Squadron, Long-Range Airborne Surveillance (67 OAE DRLO) (?/? 32457) in 1984 at Siauliai in Lithuania.[10] The unit was redesignated the 144th Independent Regiment DRLO, (?/? 89449) and then later moved to Pechora Kamenka (often referred to as "Berezovka") in 1998.

There was a detachment (two A-50s and one Il-76) as part of the 192nd Guards Kerch Red Banner Military Transport Aviation Regiment (?/? 26212), Ukurey Airfield Chita Oblast in Russia from 1985 to 1995. It was formed at the Ulan-Ude (Vostochny) airfield in 1985, and flew to Ukurei in 1988. It was disbanded in 1995 and aircraft transferred to the 144th Independent Regiment. The 18th Independent Aviation Detachment DRLO (two A-50s and 1 Il-76) was established at the Vitebsk-Severny airfield from 1985. In 1993, the detachment was disestablished.

Two aircraft "operated round-the-clock over [the] Black Sea during Operations Desert Shield and Desert Storm of the Gulf War (1990-1991), monitoring United States Air Force operations from Turkey and keeping a watch for "stray" cruise missiles."[10]:?351?

AG2 NAV LIGHTS