[Code of Federal Regulations] [Title 14, Volume 2] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR121.591] [Page 870] TITLE 14--AERONAUTICS AND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PART 121_OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS-- Subpart U_Dispatching and Flight Release Rules Sec. 121.591 Applicability. Source: Docket No. 6258, 29 FR 19222, Dec. 31, 1964, unless otherwise noted. 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]