14 CFR 93.224 - Return of slots.
(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.
Title 14 published on 2014-01-01
no entries appear in the Federal Register after this date.