| http://www.w3.org/ns/prov#value | - Change to a Type Design521.152 (1) Subject to section 521.153, no person shall undertake a change to the type design of an aeronautical product that has other than a negligible effect on the weight and centre-of-gravity limits, structural strength, performance, power plant operation, flight characteristics or other qualities affecting its airworthiness or environmental characteristics except in ac
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