Transdigm Group profiled in New America section of IBD : IBD reports last month, Defense Secretary Robert Gates proposed some serious changes to the Pentagon's spending priorities. Out with big-ticket aircraft like the F-22. In with stealthy new options like unmanned aerial vehicles. Either way, aircraft parts supplier TransDigm has it covered. "TransDigm (is) so widely diversified, the cut in the F-22 isn't going to be all that visible in their results," said analyst Fred Buonocore of CJS Securities. "What's been driving business is aircraft being chewed up in the sands of the Middle East."... What brings some stability to both sides of TransDigm's business is that about 60% of the co's sales come from aftermarket parts. So when aircraft operators are trying to nurse along their old equipment rather than buying new, they have to keep buying replacement parts from TransDigm. TransDigm can also sell upgrades to end users promising greater efficiency.