HERE FROM PIECE OF MIND BLOG
He died at an appropriate age (53, 5+3 = 8, Spook marker*), and the circumstances of his death are completely hinky. He is said to have been struggling with the fuel tank switch in his Long EZ, a second-hand home-assembled model he bought and flew even as he could easily afford something new, something factory built. It doesn’t read well. Denver, a smart man and accomplished pilot with hundreds of hours of flight time, was not going to perish in an act of idiocy.