Uraba, Medellin and Central Airways (UMCA) was a Pan American Airways-affiliate airline that from 1932 flew from the then US-controlled Panama Canal Zone to Colombia.
UMCA qualified by virtue of grandfathering, able to show that it performed bona fide scheduled service prior to the passage of the Act.
In 1947 Pan Am acquired 100% of the equity and over time, the airline dropped Cristobal and Turbo from the route, which thus became solely Panama City to Medellin.
[8] But in 1959, Pan Am decided the route was no longer worth flying and received CAB permission to stop UMCA operations.
Originally the airline flew Cristobal, Canal Zone to Turbo, Colombia to Medellin.