CHAPTER IV Airman Section 1800 .- Aviation personnel means those persons on board aircraft or land, perform functions directly related to the technique of air navigation. Section 1801 .- Corresponds to the FAA's determination of the functions to be performed by aviation personnel, conditions and requirements necessary for its exercise, and to issue the respective licenses. No person may exercise the functions assigned aviation personnel, if not holder of a license that enables it to fulfill these functions. Section 1802 .- In the absence of international treaties and reciprocity requirement, the FAA may recognize licenses issued abroad, provided that these have been validly issued by the competent authority and issuance requirements are equivalent to those required by Colombian law. Section 1803 .- Every company should occupy Colombian aviation Colombian workers in proportion not less than ninety percent. The same rule applies to foreign companies w...