The 1962 United States Tri-Service aircraft designation system is a unified designation system introduced by the United States Department of Defense on 18 September 1962 for all the U.S. military aircraft. Prior to this date, each armed service used their own nomenclature system. Under the 1962 system, almost all aircraft receive an unified designation, whether operated by the United States Air Force (USAF), United States Navy (USN), United States Coast Guard (USCG), United States Marine Corps (USMC), or the United States Army. Experimental aircraft operated by manufacturers or the National Aeronautics and Space Administration are also often assigned numbers in the X-series.
The 1962 system was based on the one used by the USAF between 1948 and 1962 which was in turn based on the USAAS/USAAC/USAAF system used from 1924 to 1948. Since it was introduced, the 1962 system has been modified and updated; in 1997 a revised form of the system was released.
Read more about 1962 United States Tri-Service Aircraft Designation System: Designation System, Non-systematic Aircraft Designations, Manufacturers Code, Block Number
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