14 C.F.R. § 121.363 Responsibility for airworthiness.
Title 14 - Aeronautics and Space
(a) Each certificate holder is primarily responsible for— (1) The airworthiness of its aircraft, including airframes, aircraft engines, propellers, appliances, and parts thereof; and (2) The performance of the maintenance, preventive maintenance, and alteration of its aircraft, including airframes, aircraft engines, propellers, appliances, emergency equipment, and parts thereof, in accordance with its manual and the regulations of this chapter. (b) A certificate holder may make arrangements with another person for the performance of any maintenance, preventive maintenance, or alterations. However, this does not relieve the certificate holder of the responsibility specified in paragraph (a) of this section. [Doc. No. 6258, 29 FR 19210, Dec. 31, 1964, as amended by Amdt. 121–106, 38 FR 22378, Aug. 20, 1973]
Title 14: Aeronautics and Space
PART 121—OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS
Subpart L—Maintenance, Preventive Maintenance, and Alterations
§ 121.363 Responsibility for airworthiness.
