Built in 1977, delivered to Aeroflot's Central division and noted at Bykovo in 1993 in operation as a laboratory aircraft with ASLK-75 equipment (Avtomatizirovannaya Sistema Lyotnogo Kontrolya - automated flight control and monitoring system). Wfu by 1999 but registered in September 2002 to Spetsavia, a new name for the Bykovo Avia flight check unit, with 'Lyotnyye proverki i sistemy' titles (Flight checks and systems) - see my 2002 photo here

Navaid check aircraft, by this time in Spetsavia markings. Details with my 1999 photo at Bykovo. Last noted at Nizhny Novgorod in August 2024