Canadian Aviation Regulations (SOR/96-433)

521.154 The holder of a design approval document who proposes to make a change to an aeronautical product, other than a change to the type design referred to in subsection 521.152(1), shall establish procedures to ensure that the changed aeronautical product continues to conform to its certification basis and make the change after the Minister accepts the procedures.

521.155 An applicant for the approval of a change to the type design of an aeronautical product shall submit to the Minister

• (a) an application that contains the information specified on the form published by the Minister entitled Design Change Approval Application;

• (b) a description of the change to the type design that identifies

  • (i) all parts of the type design, including all parts of the approved manuals, that are affected by the change, and

  • (ii) any re-investigations necessary to demonstrate the continued conformity of the aeronautical product with the applicable certification basis, by listing the standards of airworthiness that must be met and the means to be used to demonstrate conformity;

• (c) a proposed certification basis; and

• (d) a certification plan that identifies

  • (i) the means to be used to demonstrate that the change to the type design of the aeronautical product conforms to the applicable certification basis,

  • (ii) the documentation that demonstrates that the change to the type design of the aeronautical product conforms to the applicable certification basis, and

  • (iii) the resources necessary for carrying out the demonstration of conformity referred to in subparagraph (i), and

  • (iv) the schedule for carrying out the demonstration of conformity referred to in subparagraph (i).

• 521.156 (1) Unless an applicant demonstrates, at the time of submitting an application for the approval of a change to the type design of an aeronautical product, that a longer period is required for the design, development and testing of the product, and for that reason the Minister approves a longer period, the application is effective during one of the following periods, beginning on the date of the application:

  • (a) five years, in the case of a transport category aeroplane or a transport category rotorcraft; or

  • (b) three years, in the case of

    • (i) an aircraft other than an aircraft referred to in paragraph (a),

    • (ii) an aircraft engine, or

    • (iii) an aircraft propeller.

• (2) If a change to the type design of an aeronautical product is not approved within the applicable effective period referred to in subsection (1), the applicant may

  • (a) submit a new application for the approval of a change to the type design of the aeronautical product; or

  • (b) apply for an extension of the effective period of the original application.

• (3) If the effective period of an application for the approval of a change to the type design of an aeronautical product is extended under paragraph (2)(b), the standards of airworthiness applicable to the change are those in force on the date that precedes, by one of the periods referred to in subsection (1), the date of the approval of the change to the type design.