Ouest France posted an update with more details (translated)
The first elements of the investigation indicate that "the takeoff was atypical. There is no evidence yet to confirm that the helicopter was not in the same location as usual. But instead of taking off at 90 degrees, rising off the ground at a right angle, the helicopter instead took off at a 45-degree angle and struck the branch of a tree. One blade was sectioned and the occupants of the helicopter were ejected. "
A blade from the craft, which "was not recent", "hit a tree," the prosecutor also said.
...
The pilot, Jean-Claude Bedeau, was born on February 25, 1947 (74 years old) in Paris. “He had had a career as an airline pilot. "
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https://www.ouest-france.fr/normandi...ypique-7179059