hello flugkerl congratulations on creating richard vangrunsven it is great article and well sourced i have just done a little copy editing the opening paragraph includes the following sentence the number of vangrunsven designed homebuilt aircraft produced each year in north america exceeds the combined production of all commercial general aviation companies could you check the source cited for this sentence because i think the sentence contains an error it states that the number of vans' aircraft produced each year in north america exceeds and compares it with all commercial general aviation companies vans' aircraft are manufactured in large numbers by amateur builders all around the world not just in the usa and canada so the large number of such aircraft produced annually shouldn't be confined to north america secondly if you are talking about all commercial general aviation companies you are including such companies world wide the number of aircraft produced by the world's general aviation companies is unlikely to be known with any accuracy because outside north america europe and other english speaking countries aircraft manufacturers don't report their production statistices to anyone and are not obliged to do so i suggest the sentence should say the number of vangrunsven designed homebuilt aircraft produced each year exceeds the combined production of all commercial general aviation companies in north america t