Aero Advantage is NOT included in this warning, but our friendly feds continue to caution that there are a whole lot of unapproved parts floating around in the airplane universe. They range from engines to altimeters to just improper maintenance. If you suspect you might have gotten hold of a part that is not all it was claimed to be, the FAA asks that you let them know so that they can check it out and warn others. To find out which companies hold the Parts Manufacturer Approvals (PMAs) on different parts, the FAA has put together a handy listing that breaks them down by type.
