Canadian Aviation Regulations

521.159 (1) Subject to subsection (2), an applicant for the approval of a change to the type design of an aeronautical product that results in a change in the noise levels of an aircraft shall demonstrate

• (a) that the aircraft meets the noise standards specified in Subchapter A of Chapter 516 — Aircraft Emissions of the Airworthiness Manual; or

• (b) that the aircraft continues to meet the noise standards that applied before the change was undertaken and that are recorded in the type certificate data sheets or in a document that has been accepted by the Minister as being equivalent to a type certificate for that aircraft.

(2) Subsection (1) does not apply in respect of

• (a) a restricted category aircraft for use in agricultural operations or fire prevention and suppression;

• (b) the installation or removal of floats or skis;

• (c) the installation or removal of external equipment on a rotorcraft; or

• (d) an aircraft whose certification basis does not contain noise standards, if the change to the type design does not involve

  • (i) a change in the number or type of propellers,

  • (ii) a change in the number of engines or in the principle of propulsion of the engines, or

  • (iii) in the case of a rotorcraft, a change in the number of rotors or in the principle of operation of the rotors.

(3) An applicant for the approval of a change to the type design of a turbine-powered aircraft shall demonstrate that the aircraft meets the standards respecting the prevention of intentional fuel venting specified in Subchapter B of Chapter 516 — Aircraft Emissions of the Airworthiness Manual.

(4) An applicant for the approval of a change to the type design of an aircraft engine shall demonstrate that the aircraft engine meets the smoke and gaseous aircraft emissions standards specified in Subchapter B of Chapter 516 — Aircraft Emissions of the Airworthiness Manual.