§ 93.170 - Minimum usage requirements.

(a) This section does not apply to unrestricted slots.

(b) Any common slot or limited slot included in a summer or winter season schedule approved by the FAA that is not used at least 80 percent of the time during the period for which it is assigned will be withdrawn by the FAA.

(c) The FAA may waive the requirements of paragraph (b) of this section in the event of a highly unusual and unpredictable condition which is beyond the control of the carrier and which affects carrier operations for a period of five or more consecutive days. Examples of conditions which could justify a waiver under this paragraph are weather conditions that result in the restricted operation of the airport for an extended period of time or the grounding of an aircraft type.

(d) The FAA will treat as used any common slot or limited slot held by a carrier on Thanksgiving Day, the Friday following Thanksgiving Day, and the period from December 24 through the first Sunday of January.