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Sec. 21.473 - Airworthiness
certificates other than experimental.
For each amendment made to a standard airworthiness certificate under this subpart, the DAS shall follow the procedure manual prescribed in §21.441 and shall, before making that amendment -- (a) Complete each flight test necessary to meet the applicable airworthiness requirements of this chapter; (b) Find that each applicable airworthiness requirement of this chapter is met; and (c) Find that the aircraft is in condition for safe operation. |