; or (ii) served a small hub airport with more than 900,000 passenger enplanements in calendar year 2021; (B) are either currently owned by the FAA or are constructed to FAA standards; and (C) operate within complex air space that serves air carrier, general aviation, and military aircraft. (3) Tower selection The number of facilities selected to participate in the pilot program established under paragraph (1) shall be determined based on the availability of funds for the pilot program. (4) Controller retention The Administrator shall appoint to the position of air traffic controller all air traffic controllers currently employed by the Federal contract tower operator and assigned to the pilot program air traffic control tower, provided such controller— (A) meets the qualifications contained in section 44506(f)(1)(A) of title 49, United States Code; and (B) has all other pre-employment qualifications required by law. (5) Safety analysis (A) In general The Administrator shall conduct a safety analysis to determine whether the conversions described in paragraph (1) had any negative impact on the aviation safety of any air traffic control tower. (B) Report Not later than 2 years after the date of enactment of this section, the Administrator shall submit to the appropriate committees of Congress a report describing the results of the safety analysis under subparagraph (A). (6) Funding For purposes of carrying out this subsection, there is authorized to be appropriated to the Administrator $30,000,000 for fiscal year 2024, to remain available until fiscal year 2029. (b) Air traffic controller staffing levels at small and medium hub airports (1) In general Section 47124(b)(2) of title 49, United States Code, is amended— (A) by striking The Secretary may and inserting the following: (A) In general The Secretary may