I know there were some model updates not all that long ago for the first AI releases from HJG. Here are some screenies of my DC-8-62's, DC-8-63's, and a Super -70. (Is that ATI jet a -71? -72? 73?) Ooops... How'd that get in there?!?!
I have checked the 62/F and 72/F and there is nothing wrong or missing. All fan blades and cones present and correct and with the correct animation names and textures. Make sure that you are using the lasted base packs. 1.01 for the 62/F and 1.02 for the 72/F.