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Glossary of eVTOL aircraft development & Direct Air Mobility



A comprehensive list of Aeronautical Abbreviations & Codes issued by the International Civil Aviation Organization ICAO you can find from up page 15 under


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Abbreviations & terms
used in relation to the emerging realm of eVTOL aircraft, organizations involved, and infrastructure.

A & D – Aerospace & Defense

AAM - Advanced Air Mobility: "According to a 2020 paper by the US National Academies of Sciences entitled Advancing Aerial Mobility: A National Blueprint, advanced aerial mobility "involves the emergence of transformative and disruptive new airborne technology supporting an ecosystem designed to transport people and things to locations not traditionally served by current modes of air transportation, including both rural and the more challenging and complex urban environments." "
According to NASA, Advanced Air Mobility is the "emerging aviation markets to safely develop an air transportation system that moves people and cargo between places previously not served or underserved by aviation – local, regional, intraregional, urban – using revolutionary new aircraft that are only just now becoming possible..."


ACAS - Airborne Collision Avoidance System

ADS – Air Defense System

ADS-B - Automatic Dependent Surveillance–Broadcast is a surveillance technology in which an aircraft determines its position via satellite navigation or other sensors and periodically broadcasts it, enabling it to be tracked.

AFR – Advanced Air Mobility Flight Rules

AFWERX - US Air Force innovation & technology department

AGL - Above Ground Level

AIAA - American Institute of Aeronautics and Astronautics or
Aerospace Industries Association of America, Inc.

AICP – American Institute of Certified Planners

AIP - Aeronautical Information Publication

AIRAC - Aeronautical Information Regulation and Control

Aircraft: “An aircraft is a vehicle or machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. Common examples of aircraft include airplanes, helicopters, airships (incl. Blimps), gliders, paramotors, and balloons.”

Air Traffic Control Service: A service provided for the purpose of preventing collisions between aircraft, and on the manoeuvring area between aircraft and obstructions; and expediting and maintaining an orderly flow of air traffic. (ICAO definition)

AIS - Aeronautical Information Service: A service established within the defined area of coverage responsible for the provision of aeronautical data and aeronautical information necessary for the safety, regularity and efficiency of air navigation (ICAO definition)

AIXM - Aeronautical Information Exchange Model

AMDAR - World Meteorological Association's Aircraft Meteorological Data Relay