There is no way that B2 or B3 ran out of power...
Sea level, you could probably put another 6 adults in there and hover.
"It's the first time it happens with a corporate aircraft, and still do not know what caused the accident. Just know that the crew were rescued alive, with only minor injuries," said Simoes.
Low RPM lights on and horn, said the pilot...
from Heliops on FB