Hmmm .. a 3500 year old chopper .. powered by an "e-ring jerker" .. a 1000 km flight .. under personal power .. and he still even has the plans?? ..
This story lends itself to .. errr .. umm .. some kind of wordplay, involving "jerker" or "jerking" .. along with a VERY healthy dose of scepticism ..
I'd hazard a guess .. that next, a copy of a full set of blueprints of the chopper .. along with aeronautical charts of the region, dating from the same period .. will be available for a "modest fee" .. ??