Meets and has frequent contacts with both internal and external customers including subordinates, other peer management representatives, union representatives, administrative support staff within the facility, higher ranking managers and supervisors, service center personnel, members of the state, local and federal government, other foreign government aviation officials, general public, representatives of the aviation industry and military. 2) Must have been facility rated or area certified for at least 1 year (52 weeks) at an ATS facility; (Note: an employee who has been facility rated or area certified for at least 1 year (52 weeks) in an ATS facility that is upgraded is considered to meet the qualification requirements of the upgraded position, since he or she has been performing the higher-graded work; or.