ICAO - Notes

IATA airline designator
IATA airline designators, are two-character codes assigned by the International Air Transport Association (IATA) to the world's airlines in accordance with the provisions of IATA Resolution 762. They form the first two characters of the flight number Designators are used to identify an airline for all commercial purposes, including reservations, timetables, tickets, tariffs, air waybills, and in airline interline telecommunications.

ICAO airline designator
The ICAO airline designator is a code assigned by the International Civil Aviation Organization (ICAO) to aircraft operating agencies, aeronautical authorities, and services. The codes are unique by airline contrary to the IATA airline designator codes.

Call signs
Most airlines employ a distinctive and internationally recognized call sign that is normally spoken during radio transmissions as a prefix to the flight number.
Some call signs are less obviously associated with a particular airline than others. This might be for historic reasons, or possibly to avoid confusion with a call sign used by an established airline.

Aircraft Tail Prefix
In accordance with the Convention on International Civil Aviation all aircraft must be registered with a national authority. Because airplanes typically display their registration numbers on the aft fuselage just forward of the tail, in earlier times more often on the tail itself, the registration is often referred to as the "tail number”. The prefix of the tail number is country specific in many cases a combination of both country and applicably specific.

ICAO

ICAO Aircraft Type Designators with Wake Category used to classify aircraft types that are most commonly provided with air traffic services.
Wake Category
 L Light
M Medium
 H Heavy

For more information please download the following document. Click here: ICAO Aircraft Codes Explanation

ICAO Aircraft Codes
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ICAO Manufacturer Type/Model Wake
Details B429 Bell Helicopter 429 GlobalRanger L
Details B430 Bell Helicopter 430 L
Details C441 Cessna 441 Conquest 2 L
Details LJ45 Learjet 45 M
Details T34P Beech 45 Mentor L
Details B47G Bell Helicopter 47 L
Details B47G Kawasaki 47G L
Details B47J Bell Helicopter 47J Ranger L
Details EN48 Enstrom 480 L
Details TRIM Ford 4-AT Tri-Motor L
Details F50 Fokker 50 M
Details L8 Luscombe 50 L
Details BE50 Beech 50 Twin Bonanza L
Details H500 Hughes 500 L
Details C500 Cessna 500 Citation 1 L
Details AC50 Aero Commander 500 Commander 500 L
Details AC50 North American Rockwell 500 Commander 500 L
Details AC50 Rockwell 500 Shrike Commander L
Details AC50 North American Rockwell 500 Shrike Commander L
Details C501 Cessna 501 Citation 1SP L
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