1) Must have held an FAA 2152 FV-J/FG-14 or above regional or headquarters position for at least 1 year (52 weeks); OR 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 Air Traffic Services (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 3) Must have held a MSS position for at least 1 year (52 weeks) in an ATS facility. AND In addition, the incumbent must have held an MSS-2 or FAA 2152 FG-14 or above regional or headquarters positions for at least 1 year (52 weeks). NOTE: There are no restrictions on who can apply to MSS vacancies at those facilities with 3 or less MSS levels.