Russia's main investigative body says both flight recorders have been recovered from the plane that caught fire while making an emergency landing at Moscow's Sheremetyevo Airport, killing at least 40 people.
Aeroflot said the crew "did everything to save the passengers", who it said were evacuated in 55 seconds, and that a commission has been established "to investigate the causes and circumstances of the incident".
The charred remains of the Russian-made Sukhoi Superjet on Monday. Flight attendant Tatiana Kasatnika said in a video on YouTube that the plane had taken off in a storm.
Of the 78 people aboard the plane, including five crew members, thirty-seven people survived, Markovskaya told reporters at Sheremetyevo Airport.
A commission has been created to probe the cause and circumstances of the accident.
The rear exit of the plane was not accessible due to flames outside of the aircraft, so desperate passengers were only left with the front exit.
The SSJ-100 aircraft of Aeroflot Airlines on fire during an emergency landing.
Its crew sent a distress signal when "malfunctions" occurred in bad weather shortly after take-off at 6.02 p.m.
Russia's Investigative Committee said one person was confirmed dead and four injured.
Stewardess Tatyana Kasatkina, quoted by Lenta news agency, said they had just seconds to escape the plane, and she grabbed passengers by the collar, to hurl them down the escape chute.
Survivor Petr Egorov said: 'We took off and lightning hit the plane.
Originally from Santa Fe, New Mexico, he was heading to the city of Murmansk for Summer work when the plane he was on became engulfed in flames following an emergency landing, and he didn't make it out alive.
According to news.com.au, an airport official told local media: "Many passengers delayed emergency evacuation - because against all instructions - they were picking up hand luggage from overhead compartments".
The global flight tracking service, Flightradar24, shows the path of the SU1492 before its crash.
So far, Aeroflot has only said the plane was forced to turn back for "technical reasons".
Several of the 78 people on board said they believed lightning was the cause of the tragedy, which came at the end of several days of public holidays following Workers' Day on 1 May. Six people are being treated in hospital for injuries.
The region of Murmansk has announced a three-day mourning period.
Kremlin spokesman Dmitri Peskov said that Russian President Vladimir Putin had offered his condolences to the victims' loved ones.
Notably, the Sukhoi Superjet-100, the first civilian aircraft developed in Russia's post-Soviet era, was launched in 2011.