142
14 CFR Ch. I (1–1–14 Edition)
§ 21.50
or the National Transportation Safety
Board.
[Doc. No. 5085, 29 FR 14564, Oct. 24, 1964, as
amended by Doc. No. 8084, 32 FR 5769, Apr. 11,
1967]
§ 21.50
Instructions for continued air-
worthiness and manufacturer’s
maintenance manuals having air-
worthiness limitations sections.
(a) The holder of a type certificate
for a rotorcraft for which a Rotorcraft
Maintenance Manual containing an
‘‘Airworthiness Limitations’’ section
has been issued under § 27.1529 (a)(2) or
§ 29.1529 (a)(2) of this chapter, and who
obtains approval of changes to any re-
placement time, inspection interval, or
related procedure in that section of the
manual, must make those changes
available upon request to any operator
of the same type of rotorcraft.
(b) The holder of a design approval,
including either the type certificate or
supplemental type certificate for an
aircraft, aircraft engine, or propeller
for which application was made after
January 28, 1981, must furnish at least
one set of complete Instructions for
Continued Airworthiness to the owner
of each type aircraft, aircraft engine,
or propeller upon its delivery, or upon
issuance of the first standard air-
worthiness certificate for the affected
aircraft, whichever occurs later. The
Instructions must be prepared in ac-
cordance with §§ 23.1529, 25.1529, 25.1729,
27.1529, 29.1529, 31.82, 33.4, 35.4, or part 26
of this subchapter, or as specified in
the applicable airworthiness criteria
for special classes of aircraft defined in
§ 21.17(b), as applicable. If the holder of
a design approval chooses to designate
parts as commercial, it must include in
the Instructions for Continued Air-
worthiness a list of commercial parts
submitted in accordance with the pro-
visions of paragraph (c) of this section.
Thereafter, the holder of a design ap-
proval must make those instructions
available to any other person required
by this chapter to comply with any of
the terms of those instructions. In ad-
dition, changes to the Instructions for
Continued Airworthiness shall be made
available to any person required by
this chapter to comply with any of
those instructions.
(c) To designate commercial parts,
the holder of a design approval, in a
manner acceptable to the FAA, must
submit:
(1) A Commercial Parts List;
(2) Data for each part on the List
showing that:
(i) The failure of the commercial
part, as installed in the product, would
not degrade the level of safety of the
product; and
(ii) The part is produced only under
the commercial part manufacturer’s
specification and marked only with the
commercial part manufacturer’s mark-
ings; and
(3) Any other data necessary for the
FAA to approve the List.
[Amdt. 21–23, 33 FR 14105, Sept. 18, 1968, as
amended by Amdt. 21–51, 45 FR 60170, Sept.
11, 1980; Amdt. 21–60, 52 FR 8042, Mar. 13, 1987;
Amdt. 21–90, 72 FR 63404, Nov. 8, 2007; Amdt.
21–92, 74 FR 53386, Oct. 16, 2009]
§ 21.51
Duration.
A type certificate is effective until
surrendered, suspended, revoked, or a
termination date is otherwise estab-
lished by the FAA.
§ 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 de-
sign.
(b) Each applicant must submit a
statement of conformity to the FAA
for each aircraft or part thereof pre-
sented to the FAA for tests. This state-
ment of conformity must include a
statement that the applicant has com-
plied with § 21.33(a) (unless otherwise
authorized under that paragraph).
[Amdt. 21–17, 32 FR 14926, Oct. 28, 1967, as
amended by Amdt. 21–92, 74 FR 53386, Oct. 16,
2009]
§ 21.55
Responsibility of type certifi-
cate holders to provide written li-
censing agreements.
A type certificate holder who allows
a person to use the type certificate to
manufacture a new aircraft, aircraft
engine, or propeller must provide that
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