163 

Federal Aviation Administration, DOT 

§ 21.187 

§ 21.185

Issue of airworthiness certifi-

cates for restricted category air-
craft. 

(a) 

Aircraft manufactured under a pro-

duction certificate or type certificate. 

An 

applicant for the original issue of a re-
stricted category airworthiness certifi-
cate for an aircraft type certificated in 
the restricted category, that was not 
previously type certificated in any 
other category, must comply with the 
appropriate provisions of § 21.183. 

(b) 

Other aircraft. 

An applicant for a 

restricted category airworthiness cer-
tificate for an aircraft type certificated 
in the restricted category, that was ei-
ther a surplus aircraft of the Armed 
Forces or previously type certificated 
in another category, is entitled to an 
airworthiness certificate if the aircraft 
has been inspected by the FAA and 
found by him to be in a good state of 
preservation and repair and in a condi-
tion for safe operation. 

(c) 

Import aircraft. 

An applicant for 

the original issue of a special air-
worthiness certificate for a restricted 
category import aircraft is entitled to 
that certificate if— 

(1) The aircraft is type-certificated in 

accordance with § 21.25 or § 21.29 and 
produced under the authority of an-
other State of Manufacture; 

(2) The State of Manufacture cer-

tifies, in accordance with the export 
provisions of an agreement with the 
United States for import of that air-
craft that the aircraft conforms to the 
type design and is in condition for safe 
operation; and 

(3) The FAA finds that the aircraft 

conforms to the type design and is in 
condition for safe operation. 

(d) 

Noise requirements. 

For propeller- 

driven small airplanes (except air-
planes designed for ‘‘agricultural air-
craft operations,’’ as defined in § 137.3 
of this chapter, as effective on January 
1, 1966, or for dispensing fire fighting 
materials) that have not had any flight 
time before the applicable date speci-
fied in Part 36 of this chapter, and not-
withstanding the other provisions of 
this section, no original restricted cat-
egory airworthiness certificate is 
issued under this section unless the 
FAA finds that the type design com-
plies with the applicable noise require-
ments of Part 36 of this chapter in ad-

dition to the applicable airworthiness 
requirements of this section. For im-
port airplanes, compliance with this 
paragraph is shown if the country in 
which the airplane was manufactured 
certifies, and the FAA finds, that the 
applicable requirements of Part 36 of 
this chapter (or the applicable airplane 
noise requirements of the country in 
which the airplane was manufactured 
and any other requirements the FAA 
may prescribe to provide noise levels 
no greater than those provided by com-
pliance with the applicable require-
ments of Part 36 of this chapter) and 
paragraph (c) of this section are com-
plied with. 

[Amdt. 21–10, 31 FR 9211, July 6, 1966, as 
amended by Amdt. 21–32, 35 FR 10202, June 
23, 1970; Amdt. 21–42, 40 FR 1034, Jan. 6, 1975; 
Amdt. 21–92, 74 FR 53389, Oct. 16, 2009; Amdt. 
21–92, 74 FR 53389, Oct. 16, 2009; Amdt. 21–92A, 
75 FR 9095, Mar. 1, 2010] 

§ 21.187

Issue of multiple airworthi-

ness certification. 

(a) An applicant for an airworthiness 

certificate in the restricted category, 
and in one or more other categories ex-
cept primary category, is entitled to 
the certificate, if— 

(1) He shows compliance with the re-

quirements for each category, when the 
aircraft is in the configuration for that 
category; and 

(2) He shows that the aircraft can be 

converted from one category to an-
other by removing or adding equipment 
by simple mechanical means. 

(b) The operator of an aircraft cer-

tificated under this section must have 
the aircraft inspected by the FAA, or 
by a certificated mechanic with an ap-
propriate airframe rating, to determine 
airworthiness each time the aircraft is 
converted from the restricted category 
to another category for the carriage of 
passengers for compensation or hire, 
unless the FAA finds this unnecessary 
for safety in a particular case. 

(c) The aircraft complies with the ap-

plicable requirements of part 34. 

[Doc. No. 5085, 29 FR 14569, Oct. 24, 1964, as 
amended by Amdt. 21–68, 55 FR 32860, Aug. 10, 
1990; Amdt. 21–70, 57 FR 41369, Sept. 9, 1992] 

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