The main one was drug trafficking, a ballast that a large investment in security, regulated by the FAA, was required to combat it, in order to operate in the United States, in addition to the noise restriction, which forced Stage I and hush kits to be adopted, which it would increase the unforeseen expenses that the airlines had to make in their Douglas DC-8, in addition to the decertification that the country suffered due to the Samper government scandal.