To obtain certification as a Ground Instructor, the individual must pass an aircraft navigation knowledge test and a test of the fundamentals of instructing, unless the person already is employed as a teacher or holds a teacher's certification. Detailed information can be found at web sites: http://www.faa.gov/licenses_certificates/airmen_certification/airmen_FAQ and http://www.access.gpo.gov/nara/cfr/cfrhtml_00/Title_14/14cfr61_00.html, parts 61.211-61.217.
