I doubt this was controlled flight into terrain. I shouldn't speculate, and I'll get dinged for saying that much, but ... It was a good day to get into some really rough air, in the soup, get vertigo, and STP.
At the age of 84, flying solo, it could have been any of a number of medical conditions that incapacitated him too.
-ccm
102 posted on 04/20/2006 4:21:02 PM PDT by ccmay
(Too much Law; not enough Order)