---
kind: "section"
citation: "14 C.F.R. § 21.53"
title: "14"
number: "21.53"
heading: "Statement of conformity."
url: "https://uscodex.org/cfr/14/21.53"
---

# §21.53. Statement of conformity.

- (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.
- (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)](/cfr/14/21.33.md?p=a) (unless otherwise authorized under that paragraph).

## Notes

### Amendments

[Amdt. 21-17, 32 FR 14926, Oct. 28, 1967, as amended by Amdt. 21-92, 74 FR 53386, Oct. 16, 2009]

### Source

Source: Docket No. 5085, 29 FR 14564, Oct. 24, 1964, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7572; 49 U.S.C. 106(f), 40105, 40113, 44701-44702, 44704, 44707, 44709, 44711, 44713, 44715, 45303.

### Amendments

[Amdt. 21-17, 32 FR 14926, Oct. 28, 1967, as amended by Amdt. 21-92, 74 FR 53386, Oct. 16, 2009]