A History of Short Words

From the New York Times Crossword Puzzle

FAA

Fri, 1 Sep '23
Agcy. within the Dept. of Transportation
Wed, 24 May '23
Sky safety org.
Fri, 12 May '23
Air safety org.
Tue, 12 Jul '22
Org. concerned with air traffic
Sun, 23 Jan '22
Watcher of the skies, for short
Sun, 20 Jun '21
Org. whose plans are up in the air?