14 C.F.R. § 135.435 Certificate requirements.
Title 14 - Aeronautics and Space
(a) Except for maintenance, preventive maintenance, alterations, and required inspections performed by a certificated repair station that is located outside the United States, each person who is directly in charge of maintenance, preventive maintenance, or alterations, and each person performing required inspections must hold an appropriate airman certificate. (b) For the purpose of this section, a person directly in charge is each person assigned to a position in which that person is responsible for the work of a shop or station that performs maintenance, preventive maintenance, alterations, or other functions affecting airworthiness. A person who is directly in charge need not physically observe and direct each worker constantly but must be available for consultation and decision on matters requiring instruction or decision from higher authority than that of the person performing the work. [Doc. No. 16097, 43 FR 46783, Oct. 10, 1978, as amended by Amdt. 135–82, 66 FR 41117, Aug. 6, 2001]
Title 14: Aeronautics and Space
PART 135—OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT
Subpart J—Maintenance, Preventive Maintenance, and Alterations
§ 135.435 Certificate requirements.
