This is a fictional Air America skin for the Yak-52.
Air America was an American passenger and cargo airline established in 1946 and covertly owned and operated by the Central Intelligence Agency (CIA) from 1950 to 1976. It supplied and supported covert operations in Southeast Asia during the Vietnam War.
Extract the "Air America folder in :
[...]\DCS World OpenBeta\CoreMods\aircraft\Yak-52\Liveries\Yak-52