StacksVerified U.S. regulatory reference

14 CFR §21.53

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Each applicant must provide, in a form and manner acceptable to the FAA, a statement that each aircraft engine or propeller presented for type certification conforms to its type design.
  2. (b)Each applicant must submit a statement of conformity to the FAA for each aircraft or part thereof presented to the FAA for tests. This statement of conformity must include a statement that the applicant has complied with § 21.33(a) (unless otherwise authorized under that paragraph).