(a) Whenever a slot is required to be returned under this subpart, the holder must notify the office specified in § 93.221(a)(1) in writing of the date after which the slot will not be used.
(b) Slots may be voluntarily returned for use by other operators by notifying the office specified in § 93.221(a)(1) in writing.
authority: 49 U.S.C. 106(f), 106(g), 40103, 40106, 40109, 40113, 44502, 44514, 44701, 44715, 44719, 46301
cite as: 14 CFR 93.224