Almost 50 people including children are feared dead after a Soviet-era passenger plane crashed in Russia’s far eastern Amur region, state media reported on Thursday, citing local officials.

The plane, a Soviet-era Antonov An-24 with 43 passengers and six crew members, was traveling to the small town of Tynda from Blagoveshchensk, near the border with China, when it went off the radar, Vasily Orlov, the regional governor, said in a statement.

The burning fuselage of the aircraft, which was made in the Soviet era and was nearly 50 years old, was spotted on the ground by a helicopter.