No Posky timmed the airfiles to more realism. It started with the release of the 767 V4. They included an easy to fly airfile that time.
But if you fly Posky's 737 you'll notice that it also turns very slow. I think the airfile is "as real as it gets" using FS9.
I can't remember where I saw it, but someone made an update for the 747-400 airfile, because she turn like a fighter.
Otherwise check your loaded fuel / payload, maybe you are having a little overweight? (the aircraft!!!!)
Cheers,
Fabian





