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139 

Federal Aviation Administration, DOT 

§ 21.21 

a type certificate will not be issued, 
within the time limit established under 
paragraph (c) of this section, the appli-
cant may— 

(1) File a new application for a type 

certificate and comply with all the pro-
visions of paragraph (a) of this section 
applicable to an original application; 
or 

(2) File for an extension of the origi-

nal application and comply with the 
applicable airworthiness requirements 
of this subchapter that were effective 
on a date, to be selected by the appli-
cant, not earlier than the date which 
precedes the date of issue of the type 
certificate by the time limit estab-
lished under paragraph (c) of this sec-
tion for the original application. 

(e) If an applicant elects to comply 

with an amendment to this subchapter 
that is effective after the filing of the 
application for a type certificate, he 
must also comply with any other 
amendment that the FAA finds is di-
rectly related. 

(f) For primary category aircraft, the 

requirements are: 

(1) The applicable airworthiness re-

quirements contained in parts 23, 27, 31, 
33, and 35 of this subchapter, or such 
other airworthiness criteria as the 
FAA may find appropriate and applica-
ble to the specific design and intended 
use and provide a level of safety ac-
ceptable to the FAA. 

(2) The noise standards of part 36 ap-

plicable to primary category aircraft. 

[Doc. No. 5085, 29 FR 14564, Oct. 24, 1964, as 
amended by Amdt. 21–19, 32 FR 17851, Dec. 13, 
1967; Amdt. 21–24, 34 FR 364, Jan. 10, 1969; 
Amdt. 21–42, 40 FR 1033, Jan. 6, 1975; Amdt. 
21–58, 50 FR 46877, Nov. 13, 1985; Amdt. 21–60, 
52 FR 8042, Mar. 13, 1987; Amdt. 21–68, 55 FR 
32860, Aug. 10, 1990; Amdt. 21–69, 56 FR 41051, 
Aug. 16, 1991; Amdt. 21–70, 57 FR 41367, Sept. 
9, 1992; Amdt. 21–90, 72 FR 63404, Nov. 8, 2007; 
Doc. No. FAA–2015–1621, Amdt. 21–100, 81 FR 
96688, Dec. 30, 2016] 

§ 21.19

Changes requiring a new type 

certificate. 

Each person who proposes to change 

a product must apply for a new type 
certificate if the FAA finds that the 
proposed change in design, power, 
thrust, or weight is so extensive that a 
substantially complete investigation of 

compliance with the applicable regula-
tions is required. 

[Doc. No. 28903, 65 FR 36265, June 7, 2000] 

§ 21.20

Compliance with applicable re-

quirements. 

The applicant for a type certificate, 

including an amended or supplemental 
type certificate, must— 

(a) Show compliance with all applica-

ble requirements and must provide the 
FAA the means by which such compli-
ance has been shown; and 

(b) Provide a statement certifying 

that the applicant has complied with 
the applicable requirements. 

[Doc. No. FAA–2006–25877, Amdt. 21–92, 74 FR 
53385, Oct. 16, 2009] 

§ 21.21

Issue of type certificate: nor-

mal, utility, acrobatic, commuter, 
and transport category aircraft; 
manned free balloons; special class-
es of aircraft; aircraft engines; pro-
pellers. 

An applicant is entitled to a type cer-

tificate for an aircraft in the normal, 
utility, acrobatic, commuter, or trans-
port category, or for a manned free bal-
loon, special class of aircraft, or an air-
craft engine or propeller, if— 

(a) The product qualifies under § 21.27; 

or 

(b) The applicant submits the type 

design, test reports, and computations 
necessary to show that the product to 
be certificated meets the applicable 
airworthiness, aircraft noise, fuel vent-
ing, and exhaust emission require-
ments of this subchapter and any spe-
cial conditions prescribed by the FAA, 
and the FAA finds— 

(1) Upon examination of the type de-

sign, and after completing all tests and 
inspections, that the type design and 
the product meet the applicable noise, 
fuel venting, and emissions require-
ments of this subchapter, and further 
finds that they meet the applicable air-
worthiness requirements of this sub-
chapter or that any airworthiness pro-
visions not complied with are com-
pensated for by factors that provide an 
equivalent level of safety; and 

(2) For an aircraft, that no feature or 

characteristic makes it unsafe for the 

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140 

14 CFR Ch. I (1–1–24 Edition) 

§ 21.23 

category in which certification is re-
quested. 

[Doc. No. 5085, 29 FR 14564, Oct. 24, 1964, as 
amended by Amdt. 21–15, 32 FR 3735, Mar. 4, 
1967; Amdt. 21–27, 34 FR 18368, Nov. 18, 1969; 
Amdt. 21–60, 52 FR 8042, Mar. 13, 1987; Amdt. 
21–68, 55 FR 32860, Aug. 10, 1990; Amdt. 21–92, 
74 FR 53385, Oct. 16, 2009] 

§ 21.23

[Reserved] 

§ 21.24

Issuance of type certificate: pri-

mary category aircraft. 

(a) The applicant is entitled to a type 

certificate for an aircraft in the pri-
mary category if— 

(1) The aircraft— 
(i) Is unpowered; is an airplane pow-

ered by a single, naturally aspirated 
engine with a 61-knot or less V

so

stall 

speed as determined under part 23 of 
this chapter; or is a rotorcraft with a 6- 
pound per square foot main rotor disc 
loading limitation, under sea level 
standard day conditions; 

(ii) Weighs not more than 2,700 

pounds; or, for seaplanes, not more 
than 3,375 pounds; 

(iii) Has a maximum seating capacity 

of not more than four persons, includ-
ing the pilot; and 

(iv) Has an unpressurized cabin. 
(2) The applicant has submitted— 
(i) Except as provided by paragraph 

(c) of this section, a statement, in a 
form and manner acceptable to the 
FAA, certifying that: the applicant has 
completed the engineering analysis 
necessary to demonstrate compliance 
with the applicable airworthiness re-
quirements; the applicant has con-
ducted appropriate flight, structural, 
propulsion, and systems tests nec-
essary to show that the aircraft, its 
components, and its equipment are re-
liable and function properly; the type 
design complies with the airworthiness 
standards and noise requirements es-
tablished for the aircraft under 
§ 21.17(f); and no feature or char-
acteristic makes it unsafe for its in-
tended use; 

(ii) The flight manual required by 

§ 21.5(b), including any information re-
quired to be furnished by the applicable 
airworthiness standards; 

(iii) Instructions for continued air-

worthiness in accordance with 
§ 21.50(b); and 

(iv) A report that: summarizes how 

compliance with each provision of the 
type certification basis was deter-
mined; lists the specific documents in 
which the type certification data infor-
mation is provided; lists all necessary 
drawings and documents used to define 
the type design; and lists all the engi-
neering reports on tests and computa-
tions that the applicant must retain 
and make available under § 21.49 to sub-
stantiate compliance with the applica-
ble airworthiness standards. 

(3) The FAA finds that— 
(i) The aircraft complies with those 

applicable airworthiness requirements 
approved under § 21.17(f) of this part; 
and 

(ii) The aircraft has no feature or 

characteristic that makes it unsafe for 
its intended use. 

(b) An applicant may include a spe-

cial inspection and preventive mainte-
nance program as part of the aircraft’s 
type design or supplemental type de-
sign. 

(c) For aircraft manufactured outside 

of the United States in a country with 
which the United States has a bilateral 
airworthiness agreement for the ac-
ceptance of these aircraft, and from 
which the aircraft is to be imported 
into the United States— 

(1) The statement required by para-

graph (a)(2)(i) of this section must be 
made by the civil airworthiness au-
thority of the exporting country; and 

(2) The required manuals, placards, 

listings, instrument markings, and 
documents required by paragraphs (a) 
and (b) of this section must be sub-
mitted in English. 

[Doc. No. 23345, 57 FR 41367, Sept. 9, 1992, as 
amended by Amdt. 21–75, 62 FR 62808, Nov. 25, 
1997; Doc. No. FAA–2015–1621, Amdt. 21–100, 81 
FR 96689, Dec. 30, 2016] 

§ 21.25

Issue of type certificate: Re-

stricted category aircraft. 

(a) An applicant is entitled to a type 

certificate for an aircraft in the re-
stricted category for special purpose 
operations if he shows compliance with 
the applicable noise requirements of 
Part 36 of this chapter, and if he shows 
that no feature or characteristic of the 
aircraft makes it unsafe when it is op-
erated under the limitations prescribed 

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