End of The System
In 1962, the Department of Defense unified its aircraft designation systems along the lines of the Air Force's system. Many Navy aircraft then in service were redesignated. For many planes, the mission letters and design numbers were retained, as the AD Skyraider became the A-1 and the F4H Phantom II became the F-4. Some aircraft design numbers were not retained, like the North American Vigilante, which was redesignated from A3J to A-5.
Read more about this topic: 1922 United States Navy Aircraft Designation System
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“... in America ... children are instructed in the virtues of the system they live under, as though history had achieved a happy ending in American civics.”
—Mary McCarthy (1912–1989)