14 C.F.R. § 121.661 Initial approach altitude: Flag operations.
Title 14 - Aeronautics and Space
When making an initial approach to a radio navigation facility under IFR, no person may descend below the pertinent minimum altitude for initial approach (as specified in the instrument approach procedure for that facility) until his arrival over that facility has been definitely established.
Title 14: Aeronautics and Space
PART 121—OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS
Subpart U—Dispatching and Flight Release Rules
§ 121.661 Initial approach altitude: Flag operations.
