Moscow: Investigators said on Tuesday that the Russian plane crash that killed all 71 people on board may have been triggered by speed indicators failure.
Russian authorities are trying to figure out how the Antonov AN-148 passenger jet on board fell from the sky minutes after take off and crashed outside Moscow on Sunday after taking off from the capital's Domodedovo airport.
The Flight #6W703 plane operated by the domestic Saratov Airlines was flying to Orsk, a city in the Urals, and crashed in the Ramensky district on the outskirts of Moscow.
Russian news agencies reported 65 passengers and 6 crew were on board.
An emergency services source told Russian news agency Interfax that all 71 people ob board were feared dead.
Earlier, Interfax reported that the crash may have been caused by a collision with a helicopter, but there was no confirmation of this angle from investigators.
The transport ministry said several causes for the crash are being considered, including weather conditions and human error.
Prosecutors opened an investigation into Saratov Airlines following the crash.
Here's a Youtube video of a AN-148 jet similar to the aircraft that crashed on Sunday.