So why can't Longreach wack down some concrete and bobs ya uncle.
Yes if a 747-200 can land there then a 400 could as well.
So what if they already have a 747 707 etc, it is a museum dedicated to Qantas and they also should source an F27 DC9 and 727 to complete a nice set of Aussie heavy metal ( well apart from the F27 !! )
It's only money...
