Question: Is it OK to use the Assembly & Operations Manual for the Pilatus PC9 when assembling the Texan II or Harvard II?

Answer: Yes, the Texan II, Harvard II and Pilatus PC9 are the same airframe with different graphics. The assembly procedure and specifications are identical.

Better Answer: Yes. The full size Texan II and the full size Harvard II are based on the Pilatus PC9 and built under license in Wichita, KS by Raytheon. The Pilatus PC9 is made in Switzerland by Pilatus and sold worldwide. The Australian and Swiss models from VMAR have PC9 graphics... the Texan II has USAF graphics and the Harvard II has RCAF (Canada) graphics. The VMAR model airframes are the same for all four versions and the assembly procedure and specifications are identical. There are minor variations between the models that do not affect the assembly process... for example the fins beneath the fuselage may or may not be included with the PC9 and the canopies are different. The PC9 has a single roll bar type canopy... the Canadian and USAF product have double roll bars. The cockpit instrumentation is also different.