There are various versions of KaiTak. From simple afcads that re-opens the old airport to whole sceneries:
In my humble opinion the best freewares are by Jim Vile:
kaitak98.zip and/or kaitak63.zip together with
hkautogen2.zip and hongkong.zip
File names are all from Avsim
More info on this and links to several other goodies can be found here:
http://www.swiremariners.com/cathayhk.html
KaiTak, FS9
Moderators: Guru's, The Ministry