Q:Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Convair CV-240 family - The Convair CV-240 is an American airliner produced by Convair from 1947 to 1954 initially as a possible replacement of the ubiquitous Douglas DC-3. While featuring a more modern design the 240 series was able to make some inroads as a commercial airliner and also had a long development cycle which resulted in a number of civil and military variants. Although reduced in numbers through attrition the Convairliners in various forms continue to fly into the 21st century.
A:
Mean Of Transportation