CFR > Title 14 - Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER F—AIR TRAFFIC AND GENERAL OPERATING RULES (parts 91 to 106) > PART 93—SPECIAL AIR TRAFFIC RULES > SUBPART B—Congestion and Delay Reduction at Chicago O'Hare International Airport (§93.21 to §93.33) > 93.23—Arrival Authorizations.

93.23—Arrival Authorizations.

(a) Except as otherwise established by the FAA under paragraph (d) of this section and § 93.29 of this subpart, the number of Arrival Authorizations shall be limited to:
(1) 88 per hour between the hours of 7 a.m. and 7:59 p.m. Monday through Friday and 12 p.m. and 7:59 p.m. Sunday,
(i) Not to exceed 50 during each half-hour beginning at 7 a.m. and ending at 7:59 p.m.
(ii) Not to exceed 88 within any two consecutive 30-minute periods.
(2) 98 between 8 p.m. and 8:59 p.m. Monday through Friday, and Sunday, not to exceed 50 between 8 p.m. and 8:29 p.m. and 50 between 8:30 p.m and 8:59 p.m.
(b) An Arrival Authorization is a temporary operating privilege subject to FAA control. Only Carriers may hold Arrival Authorizations. Arrival Authorizations may not be bought, sold, leased, or otherwise transferred to another Carrier, except as provided in §§ 93.27 and 93.28 of this subpart.
(c) Beginning six months from the effective date of this rule and on each six-month anniversary thereafter, the FAA shall conduct a review of existing capacity at O'Hare, to determine whether to increase the number of Arrival Authorizations. The FAA will consider the following factors:
(1) The number of delays;
(2) The length of delays;
(3) Weather conditions;
(4) On-time arrivals and departures;
(5) The number of actual arrival operations;
(6) Runway utilization and capacity plans; and
(7) Other factors relating to the efficient management of the national air space system.
(d) Notwithstanding paragraph (a), the Administrator may increase the number of Arrival Authorizations based on the review conducted in paragraph (c) of this section.