The holder of an air traffic control tower operator certificate may not perform any duties under that certificate unless—
(a) He has served for at least three of the preceding 6 months as an air traffic control tower operator at the control tower to which his facility rating applies, or at the operating positions for which he has qualified; or
(b) He has shown that he meets the requirements for his certificate and facility rating at the control tower concerned, or for operating at positions for which he has previously qualified.
authority: 49 U.S.C. 106(f), 40113, 44701-44703, 44707, 44709-44711, 45102-45103, 45301-45302
source: Docket 1179, 27 FR 7973, Aug. 10, 1962, unless otherwise noted.
cite as: 14 CFR 65.50