History — 521.159

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 r…