This book embarks on a discussion of rulemaking in air transport, its processes and legalities, starting with a deconstruction of work carried out at the time of writing in various fields of air transport by the International Civil Aviation Organization (ICAO) which should be at the apex of rulemaking. This initial discussion, which demonstrates the weakness of rulemaking in the air transport field for lack of direction, purpose and structure in the development of authoritative rules and regulations that should serve as compelling directives from the main organization responsible for aviation, leads to an evaluation of the fundamental principles of rulemaking in ICAO, the Federal Aviation Administration (FAA) of the United States and the European Commission (EC).