Download the PDF consolidation of Part 21 [PDF 439 KB]
(a) Subject to paragraph (b), the following are acceptable technical data:
(1) a type certificate data sheet:
(2) a foreign type certificate data sheet used for the issue of a type acceptance certificate:
(3) type design data for a type certificated product:
(4) design change data that supports a design change approved by the means specified in rule 21.73:
(5) data approved by the Director under rule 21.505:
(6) data provided by the Director in an Advisory Circular:
(7) an airworthiness directive that gives a specific instruction for modification or repair:
(8) a supplemental type certificate issued by the following:
(i) the Federal Aviation Administration of the United States of America:
(ii) the Civil Aviation Safety Authority of Australia:
(iii) Transport Canada:
(9) supplemental type approvals issued by Transport Canada:
(10) data giving a specific instruction for modification or repair contained in a maintenance manual, repair manual, overhaul manual, instruction for continued airworthiness, service bulletin, or an equivalent provided by the manufacturer of the product for which it is to be used and which is listed in the type certificate, or by reference in the type acceptance certificate:
(11) AC43.13-1B, issued by the Federal Aviation Administration of the United States of America:
(12) data included in and specific to the category of an airworthiness certificate.
(b) The technical data listed in paragraph (a) are acceptable if—
(1) the data is appropriate to the product, component, or appliance, and is directly applicable to the work being carried out; and
(2) for a foreign supplemental type certificate or supplemental type approval—
(i) a complete new flight manual is not introduced; and
(ii) the aircraft type is not re-designated; and
(iii) the data is supplemental to the particular type certificate accepted by the Director and that type certificate is referenced on the supplemental type certificate or supplemental type approval; and
(3) the installer has the written permission of the holder of the supplemental type certificate or supplemental type approval to install the STC; and
(4) data provided by the manufacturer of a component does not conflict with data provided by the manufacturer of the product or assembly of which the component is to form a part.