One of my best Aviation friends is retired now, close to 80 years old, owned flying schools, charter airlines, managed airlines in New Guinea. One instance of note, he operated a charter operation 40 years ago, flying his own Dakota C47. I know him personally, have seen his pile of Logbooks, a Kangaroo could not jump over.
He phones me every week for a yarn. This guy is a true Aviator with many thousands of hours, in so many different aircraft
For me, his knowledge is gold…...