SCADTA

SCADTA or Sociedad Colombo Alemana de Transportes Aéreos was an airline formed in 1919 and based in Colombia. It issued its own stamps to provide airmail service to and from Colombia and the US, Canada and various South American and European countries.
 * its first stamp was issued in 1920.
 * Beginning in 1923 it overprinted its stamps with coded letters for service to each country (3 major types).
 * Beginning in 1928-29 SCADTA stamps were surcharged for use in Ecuador service.
 * In 1929, a general issue was released.
 * In 1929 registration stamps were issued, overprinted "R".
 * With the beginning of World War II, its assets were seized and SCADTA was merged with the Colombian SACO airline, becoming Avianca.

 File:SCADTA 30c green.jpgsurvey flight, Barranquilla, Colombia to Paita, Peru. File:SCADTA survey flt Peru.jpg|1924 

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