It is with my most deepest regrets that I have to tell all that David Opa Marshall, known here as Opaplano, passed away last Thursday of a heart attack. His daughter, Mary, sent e-mails to some of his contacts to tell of his death. Opa was a great man and was a true friend, even though I never met him in person. He has helped many, including myself, with all his posts and uploads. He will be sadly missed by all. Happy flying in the beyond, Opa. Rest in peace. Bob.