Why won the latest versions of some aircraft work in Flight Gear 9.10?
The latest FlightGear aircraft need to use some files such as new instrument files only released with version 1.0. If you are stuck with an older version of FlightGear you can try downloading an earlier version of the aircraft here : http://web.archive.org/web/20060204211745/www.flightgear.org/Downloads/aircraft/ or here:http://ftp.riken.go.