I. CAA, the /ˌsiː eɪ ˈeɪ/ BrE AmE
(the Civil Aviation Authority) a British organization that controls the operation of the air travel industry, especially by making safety rules and directing the traffic of planes in the UK
II. ˌCivil Aviˈation Auˌthority, the BrE AmE abbrev. CAA
a British organization that controls the operation of the air travel industry, especially by making safety rules and directing the traffic of planes in the UK. There is a similar organization in the US called ↑ Federal Aviation Administration .