Where does the info about pitch and throttle settings come from, and the witness info? First I've seen of those.
As for CO - definitely a possibility, but then this Decathlon must be in a different class from all the Citabrias/Decathlons I've flown, which have howling gales through the cabin at all times from the numerous ventilation holes, intentional and otherwise. otoh since it belonged to the richest hotel-chain owner in the world, I guess it's possible - walnut-panelled Super-D with extra thick pillows and room service anyone?
n5296s