This is reported by "Fontanka".
As noted, the change in the route of flight 878 was due to problems with the engine.
According to the online scoreboard of Pulkovo airport, the plane left London at 11:42, and at 16:35 it was supposed to land in St. Petersburg.
As a result, the airliner was redirected to Stockholm-Arlanda Swedish Airport.
Recall, as previously reported, "URA-Inform", two people were killed in the wreck of a light-engine business aircraft Learjet 35-A near New York. At the same time the airliner flew from the international airport of Philadelphia.