The British person who was killed when a plane crashed in western Russia has been named as Donna Bull. The Boeing 737 airliner, flying from Moscow, exploded when it hit the runway in Kazan killing all 50 people in board.
The Russian passenger plane crash that killed 50 people, including Briton Donna Bull, was caused by pilot error, investigators said.
Russia's aviation safety watchdog said the pilots of the Boeing 737 somehow let the plane become too slow at a low altitude, resulting in a diving crash that killed all on board.
The Interstate Aviation Committee said the plane's engines and other systems were working fine until the moment it hit the ground.
The crew put the plane's engines on maximum power, raising the nose up at a sharp angle, causing a quick loss of speed - they then tried to gain speed by taking the plane into a dive, but hit the ground at a near-vertical angle.
The widower of a British woman killed in a Russian plane crash said it was a "very difficult and emotional time" as her family tries to come to terms with the shock and loss.
Robert Crome said Donna Bull was "a wonderful mother" to her children George and Kate, and "kind, thoughtful and caring" to her friends and family".
He said in a statement today: "She was also a dedicated and hard-working professional, as a teacher and educationalist, so her students will all miss her greatly. Words are inadequate to express our grief and loss.
"We hope that the UK and Russian authorities can help to ease any administrative difficulties. We extend our heartfelt sympathies to all those families in Russia who too have lost their loved ones in this tragedy."
A British national was among 50 people killed when a Boeing 737-500 crashed in Kazan, Russia, on Sunday.
The UK Foreign Office said: "We can confirm the death of a British national in Kazan, Tatarstan, on November 17. We are in touch with local authorities and providing consular assistance to those affected."
The plane that crashed in the Russian city of Kazan lost altitude quickly and its fuel tank exploded on impact with the runway, eyewitnesses said.
There were high winds and cloudy skies over the airport in central Russia but temperatures were above zero, according to local reports.
This is the latest disaster involving a plane from Russia's regional airlines, which have a poor safety record.
In April 2012, at least 31 people were killed when a Russian passenger plane crashed shortly after take-off in Siberia.
In September 2011, a Yak-42 passenger jet carrying members of a major league ice hockey team came down shortly after takeoff and burst into flames near the Russian city of Yaroslavl, killing 44 people.
Russia and the former Soviet republics combined had one of the world's worst air-traffic safety records in 2010, with a total accident rate almost three times the world average, according to the International Air Transport Association.