A Boeing 757-500 aircraft was involved in a disaster in Russia on the night between September 13 and September 14 2008. The aircraft was coming from Moscow and was operated by Aeroflot's subsidiary Aeroflot Nord on a scheduled flight to Perm in Ural.
Engine failure is said to be the main cause of the crash but in my opinion this cannot be the only problem because pilots are trained to fly a twin engine aircraft with one engine inoperative, other causes to this disaster can be a faulty rudder deflection, or even one of the hydraulic systems damaged, according to the media sources the pilots may have misinterpreted the instructions given by ATC when on approach to Perm. 88 passengers and crew members lost their lives in this disaster. The aircraft was built in the early 1990's and was originally delivered to Braathens, a Norwegian airline.
Aeroflot's last major disaster was in 1994 when an Airbus A310 crashed because the captain let his fifteen year old son take the controls of the aircraft! Since then Aeroflot had no more accident, and so it greatly improved its reputation and safety record. Aeroflot mainline does not fly the Boeing 737 and the Airbus A310 anymore.