Aeroflot Flight A-13 (Russian: Рейс A-13 Аэрофлота Reys A-13 Aeroflota) was a scheduled Soviet domestic passenger flight from Baku, Azerbaijan to Fort-Shevchenko in Kazakhstan that crashed on 18 August 1973 shortly after takeoff killing 56 of the 64 passengers and crew aboard. The Antonov An-24 had suffered an engine failure on takeoff and was attempting to return to the airport when it struck an oil rig cable at low altitude resulting in a crash. At the time, it was the second worst accident involving the An-24 and remains the worst aviation accident in Azerbaijani history. The engine failure had been caused by the effect of continuous overheating on the performance of the blades.