The FAR’s authorize the "manufacturer" of the aircraft to conduct the tests However, the builder of an amateur-built aircraft does not meet the FAA’s definition of a manufacturer. The FAA, in Order 8130.2, defines a manufacturer as a Production Approval Holder (PAH). Some examples of a PAH would be the holder of a Production Certificate (PC), a Parts Manufacturing Authority (PMA), and Technical Standards Order Authorization (TSOA). An amateur builder does not fit this definition. Thus, the amateur-builder cannot perform the transponder and pitot/static tests on his/her homebuilt.