Olivier Dassault, French MP and son of industrialist Serge Dassault, died in a helicopter crash on Sunday.
The 69-year-old, a lawmaker with the center-right Republicans party, was killed in Calavdos in Normandy, northern France, French media said.
He was born on June 1, 1951 in Boulogne-Billancourt, a plush Parisian suburb.
Dassault was worth an estimated €5 billion, according to Forbes Magazine. His two brothers and his sisters are amongst the heirs to the family fortune.
The business empire was founded by his grandfather Marcel, an aeronautical engineer and celebrated inventor who developed a propeller used in French planes during World War I.
Defying opposition from the French government, the family turned it into an aviation and defense giant before branching out into media assets.
It counts right-leaning French daily Le Figaro amongst the publications that it owns.
The group’s Rafale aircraft is considered one of the world’s most advanced fighter planes.