14 C.F.R. § 121.605 Airplane equipment.
Title 14 - Aeronautics and Space
No person may dispatch or release an airplane unless it is airworthy and is equipped as prescribed in §121.303.
Title 14: Aeronautics and Space
PART 121—OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS
Subpart U—Dispatching and Flight Release Rules
§ 121.605 Airplane equipment.