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Aircraft recognition generally depends on learning the external appearance of the aircraft, both friendly and hostile, most likely to be encountered. Techniques used to teach this information have included scale models , printed silhouette charts, slide projectors , computer aided instruction and even specially-printed playing cards .
USAAF unit identification aircraft markings, commonly called "tail markings" after their most frequent location, were numbers, letters, geometric symbols, and colors painted onto the tails (vertical stabilizer fins, rudders and horizontal surfaces), wings, or fuselages of the aircraft of the United States Army Air Forces (USAAF) during the ...
Aircraft identification (e.g. aircraft registration or a flight number) Aircraft type as the relevant 4-letter ICAO designator (e.g. B744 for a Boeing 747-400) Level (assigned altitude) Departure and destination; At least one time in four figures (other times can be shortened to minutes only). Other information may be added as required.
The registration often denotes the aircraft type and maker. Some examples: HB-Axx two-engined aircraft from 5.7 to 15 tons, Aircraft over 15 tons due to shortage of Jxx. HB-Bxx balloons; HB-Cxx single-engined Cessnas under 5.7 tons; HB-Dxx and HB-Kxx other single-engined aircraft under 5.7 tons; HB-Fxx Swiss-produced aircraft like PC-6 and PC-12
These aircraft are used to compete in various NIFA flying events, [7] including the Short-field Landing Event as well as the Power Off Landing Event. Some of the core competitive ground events are: Aircraft Recognition and Identification , E6B Manual Flight Computer Accuracy and S.C.A.N (Simulated Comprehensive Aircraft Navigation).
Bort numbers serve the same purpose as the US military tail code system: to provide a means to identify a specific aircraft in a squadron without the use of the aircraft's serial number. Unlike the tail code system, bort numbers are not unique to a given aircraft, often change over time, and are not attributable to a certain base or squadron ...
The aircraft were operating in airspace known as the Air Defense Identification Zone, or ADIZ, that stretches 150 miles from the coastline, an area where aircraft are asked to identify themselves. ...
Aircraft recognition became a significant hobby providing many with thousands of hours of entertainment and spawning many books and publications, including flashcards, on the subject. Many participated in contests and recognition "Bees". Recognition clubs and meeting flourished becoming a major social phenomenon of the day.