Un exemple

FRU – Bishkek 

Head to Bishkek, the capital of Kyrgyzstan, and you’ll find the airport is named Manas International. Manas, as it happens, is a character from an epic poem, revered as a fierce warrior and great unifier, and hugely famous in Kyrgyzstan. Most experts say he never actually existed, but either way his name is found all over the place in the Central Asian nation. So then, why FRU? For that we have to dig back into the Soviet era, when Kyrgyzstan was part of the USSR. In that time Bishkek was known as Frunze, named for Mikhail Frunze, a Bolshevik leader and Red Army commander who was born in modern-day Kyrgyzstan. If that isn’t useful trivia then I don’t know what is.