avionics and survivability: the Sapfir-23MLA-II featured improved modes for look-down/shoot-down and close-in fighting. A new SPO-15L radar warning receiver was installed, along with chaff / flare dispensers. The new and very effective Vympel R-73 (NATO: AA-11 'Archer') short-range air-to-air missile was added to inventory. No new-build 'MLD' aircraft were delivered to