An ICAO Aircraft Type Designator is a simple yet essential tool in aviation. It consists of up to four characters and is used in flight plans and air traffic service messages. Typically, each designator comes from the manufacturer’s product name or a well-known military type number. Generally, only one designator is given per aircraft type. However, if a variant has notable performance differences important for air traffic services, or if no shared designator is applicable, a different one may be assigned. In SKYbrary, these aircraft types and variants are referenced using their designators. ICAO also ensures that each aircraft type or variant heavier than ultra or micro light gets its unique designator.
To find current designators, you can access the ICAO Doc 8643: Aircraft Type Designators. This resource includes a searchable online database that is regularly updated and contains over 10,000 entries.
There are special designators for certain aircraft types that do not yet have specific designators. For instance, an airship is designated as ZZZZ, a balloon is labeled BALL, while gliders are marked GLID. Other examples include microlight aircraft (ULAC), microlight autogyros (GYRO), and microlight helicopters (UHEL). The list continues with sailplanes (GLID), ultralight aircraft (ULAC), ultralight autogyros (GYRO), and ultralight helicopters (UHEL). Each designation plays a crucial role in ensuring clarity and safety in air traffic management.
