SUBPART 3:
CHANGES TO TYPE CERTIFICATES
Changes in type design
21.03.1 The changes in type design for products are –
(a)
a minor change;
(b)
a major change;
(c)
an acoustical change; and
(d)
an emission change.
Reporting of minor changes in type design
21.03.2 All minor changes in a type design shall be reported in writing to the Commissioner by the holder of a type certificate.
Approval of major changes in type design
21.03.3 (1) The holder of a type certificate who applies for the approval of a major change in a type design, shall submit to the Commissioner substantiating data and necessary descriptive data for inclusion in the type design.
(2) Approval of a major change in the type design of an aircraft engine shall be limited to the specific engine configuration upon which the change is made, unless the applicant –
(a)
identifies in the necessary descriptive data for inclusion in the type design the other configurations of the same engine type for which approval is requested; and
(b)
shows that the change is compatible with such other configurations.
Required design changes
21.03.4 (1) In the event of the Commissioner issuing an airworthiness directive, the holder of the type certificate for the product concerned shall –
(a)
if design changes are necessary to correct the unsafe condition of such product, submit the appropriate design changes and substantiation data to the Commissioner for approval, when required to do so; and
(b)
upon approval of the design changes, make available the descriptive data covering the changes to all operators of products previously certificated under the type certificate.
(2) In a case where there are no current unsafe conditions, but the Commissioner or the holder of the type certificate finds through service experience that changes in type design will contribute to the safety of the product, the holder of the type certificate may submit appropriate design changes and substantiation data for approval.
(3) Upon approval of the design changes referred to in sub-regulation (2), the holder of the type certificate shall make available information on the design changes to all operators of the same type of product.
Airworthiness design standards
21.03.5 An applicant for the approval of a change to a type certificate shall comply with the appropriate airworthiness design standards referred to in regulation 21.02.3.

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