The chief executive of French oil major Total, Christophe de Margerie, was killed when his private jet collided with a snow plough as it was taking off from Moscow's Vnukovo airport on Monday night.
De Margerie's death leaves a void at the top of one of the world's biggest listed oil firms at a difficult time for the industry as oil prices fall and state-backed competitors keep them out of some of the best oil exploration territory.
The collision occurred minutes before midnight Moscow time as de Margerie's Dassault Falcon jet was taking off for Paris.
Russia's Investigative Committee said the driver of the snow plough had been drunk and that a criminal investigation had been launched. The plane's three crew also died, said Total. The airport said visibility was 350 meters (1,150 feet) at the time of the crash.
Vnukovo is Moscow's oldest and third biggest airport. Located southwest of the capital, it is used by Russian President Vladimir Putin and other government officials.
De Margerie, 63, had attended a Russian government meeting on foreign investment in Gorki near Moscow on Monday.
With his distinctive bushy mustache and outspoken manner, he was one of the most recognizable of the world's top oil executives. Total is France's second-biggest listed company, with a market value of 102 billion euros ($130.5 billion).
Christophe de Margerie, amministratore delegato e presidente della compagnia petrolifera francese Total è morto in un incidente aereo avvenuto all'aeroporto Vnukovo di Mosca. Aveva 63 anni e dal 2010 era alla guida di Total. Il velivolo privato sul quale viaggiava si sarebbe schiantato al suolo poco dopo il decollo, dopo aver urtato un veicolo adibito alle pulizie della pista innevata. Nell'incidente, avvenuto poco dopo la mezzanotte (ore di Mosca, le 22 in Italia), sono deceduti anche i tre membri francesi dell'equipaggio dell'aereo, mentre l'autista del mezzo spalaneve, secondo le autorità aeroportuali, è ancora vivo.
