This is all I can find now. I remember reading about it when it happened, Omar Contreras was planning to fly his trike over the highest peaks in the Andes to riase money for charity. He was an EXTREMELY experienced pilot. He had...
Janet taught us this technique, then we went out and filmed it
In this trike, the charts can easily rest on the dash board during flight. I still find paper charts extremely useful on XC-- often it's the only place that has the correct info....