In this Part:
"technical data" , for the design of an aircraft, aircraft engine, propeller or appliance, or for the design of a modification of, or repair to, an aircraft, aircraft engine, propeller or appliance, means:
(a) data that describes the design, including:
(i) the drawings and specifications necessary to define the configuration and design features of the aircraft, aircraft engine, propeller or appliance, or of the modification or repair, and a list of those drawings and specifications; and
(ii) information on dimensions, materials and processes necessary for making the aircraft, aircraft engine, propeller or appliance, or the modification or repair; and
(iii) the airworthiness limitations section of the instructions for the continued airworthiness of the aircraft, aircraft engine, propeller or appliance; and
(iv) the operating limitations and other information necessary for the safe operation of the aircraft, aircraft engine, propeller or appliance; and
(v) any other data necessary to determine the airworthiness of the aircraft, aircraft engine, propeller or appliance; and
(b) engineering reports, including test plans and reports, used to show that the design complies with the applicable airworthiness standards for an instrument for the design.