Federal Aviation Administration, DOT Section 121.595 (2) Airport classification requirements under part 139 of this chapter to serve the type airplane to be operated and the type of operation to be conducted. (f) For the purpose of this section, the terms - Domestic type operation means any domestic operation conducted with - (1) An airplane designed for at least 31 passenger seats (as determined by the aircraft type certificate issued by a competent civil aviation authority) at any land airport in any State of the United States, the District of Columbia, or any territory or possession of the United States; or (2) An airplane designed for more than 9 passenger seats but less than 31 passenger seats (as determined by the aircraft type certificate issued by a competent civil aviation authority) at any land airport in any State of the United States (except Alaska), the District of Columbia, or any territory or possession of the United States. Flag type operation means any flag operation conducted with - (1) An airplane designed for at least 31 passenger seats (as determined by the aircraft type certificate issued by a competent civil aviation authority) at any land airport in any State of the United States, the District of Columbia, or any territory or possession of the United States; or (2) An airplane designed for more than 9 passenger seats but less than 31 passenger seats (as determined by the aircraft type certificate issued by a competent civil aviation authority) at any land airport in any State of the United States (except Alaska), the District of Columbia, or any territory or possession of the United States. Supplemental type operation means any supplemental operation (except an all-cargo operation) conducted with an airplane designed for at least 31 passenger seats (as determined by the aircraft type certificate issued by a competent civil aviation authority) at any land airport in any State of the United States, the District of Columbia, or any territory or possession of the United States. United States means the States of the United States, the District of Colum- bia, and the territories and possessions of the United States. NOTE: Special Statutory Requirement to Operate to or From a Part 139 Airport. Each air carrier that provides - in an aircraft (e.g., airplane, rotorcraft, etc.) designed for more than 9 passenger seats - regularly scheduled charter air transportation for which the public is provided in advance a schedule containing the departure location, departure time, and arrival location of the flight must operate to and from an airport certificated under part 139 of this chapter in accordance with 49 U.S.C. 41104(b). That statutory provision contains stand-alone requirements for such air carriers and special exceptions for operations in Alaska and outside the United States. Nothing in Section 121.590 exempts the air carriers described in this note from the requirements of 49 U.S.C. 41104(b). Certain operations by air carriers that conduct public charter operations under 14 CFR part 380 are covered by the statutory requirements to operate to and from part 139 airports. See 49 U.S.C. 41104(b). [Doc. No. FAA-2000-7479, 69 FR 6424, Feb. 10, 2004; Amdt. 121-304, 69 FR 31522, June 4, 2004] Subpart U - Dispatching and Flight Release Rules SOURCE: Docket No. 6258, 29 FR 19222, Dec. 31, 1964, unless otherwise noted. Section 121.591 Applicability. This subpart prescribes dispatching rules for domestic and flag operations and flight release rules for supplemental operations. [Doc. No. 28154, 61 FR 2614, Jan. 26, 1996] Section 121.593 Dispatching authority: Domestic operations. Except when an airplane lands at an intermediate airport specified in the original dispatch release and remains there for not more than one hour, no person may start a flight unless an aircraft dispatcher specifically authorizes that flight. Section 121.595 Dispatching authority: Flag operations. (a) No person may start a flight unless an aircraft dispatcher specifically authorizes that flight. (b) No person may continue a flight from an intermediate airport without redispatch if the airplane has been on the ground more than six hours. 215 VerDate Sep<11>2014 08:20 May 17, 2019 Jkt 247048 PO 00000 Frm 00225 Fmt 8010 Sfmt 8010 Y:\SGML\247048.XXX 247048