Enheder fra tredjelande har mulighed for at komme med i et ACC3's (Air Cargo or Mail Carrier operating into the Union from a Third Country Airport) sikre forsyningskæde ved at ansøge om at blive udpeget som kendt befragter fra et tredjeland med EU-validering af luftfartssikkerheden (KC3).
Third country entities have the option to become part of an ACC3’s (Air cargo or mail carrier operating into the Union from a third country airport) secure supply chain by seeking designation as a third country EU aviation security validated Known Consignor (KC3).