The compendium is designed to be used as a CFII reference guide. It is compiled from FAA related information and is organized around the Areas of Operations listed in the Instrument rating ACS (FAA-S-ACS-8C) Effective March 31, 2024. FAA sources include FARs, Aeronautical Information Manual, Instrument ACS, Advisory Circulars, Instrument Flying Handbook, Instrument Procedures Handbook, Weather.gov, and FAA Chief Council interpretations.