169
Federal Aviation Administration, DOT
§ 21.618
States if the FAA finds no undue bur-
den in administering the applicable re-
quirements of Title 49 U.S.C. and this
subchapter.
(b) The TSO authorization holder
must obtain FAA approval before mak-
ing any changes to the location of any
of its manufacturing facilities.
(c) The TSO authorization holder
must immediately notify the FAA, in
writing, of any change to the manufac-
turing facilities that may affect the in-
spection, conformity, or airworthiness
of its product or article.
§ 21.610
Inspections and tests.
Each applicant for or holder of a TSO
authorization must allow the FAA to
inspect its quality system, facilities,
technical data, and any manufactured
articles and witness any tests, includ-
ing any inspections or tests at a sup-
plier facility, necessary to determine
compliance with this subchapter.
§ 21.611
Issuance.
If the FAA finds that the applicant
complies with the requirements of this
subchapter, the FAA issues a TSO au-
thorization to the applicant (including
all TSO deviations granted to the ap-
plicant).
§ 21.613
Duration.
(a) A TSO authorization or letter of
TSO design approval is effective until
surrendered, withdrawn, or otherwise
terminated by the FAA.
(b) If a TSO is revised or canceled,
the holder of an affected FAA letter of
acceptance of a statement of conform-
ance, TSO authorization, or letter of
TSO design approval may continue to
manufacture articles that meet the
original TSO without obtaining a new
acceptance, authorization, or approval
but must comply with the require-
ments of this chapter.
§ 21.614
Transferability.
The holder of a TSO authorization or
letter of TSO design approval may not
transfer the TSO authorization or let-
ter of TSO design approval.
§ 21.616
Responsibility of holder.
Each holder of a TSO authorization
must—
(a) Amend the document required by
§ 21.605 as necessary to reflect changes
in the organization and provide these
amendments to the FAA.
(b) Maintain a quality system in
compliance with the data and proce-
dures approved for the TSO authoriza-
tion;
(c) Ensure that each manufactured
article conforms to its approved design,
is in a condition for safe operation, and
meets the applicable TSO;
(d) Mark the TSO article for which
an approval has been issued. Marking
must be in accordance with part 45 of
this chapter, including any critical
parts;
(e) Identify any portion of the TSO
article (e.g., sub-assemblies, compo-
nent parts, or replacement articles)
that leave the manufacturer’s facility
as FAA approved with the manufactur-
er’s part number and name, trademark,
symbol, or other FAA approved manu-
facturer’s identification;
(f) Have access to design data nec-
essary to determine conformity and
airworthiness for each article produced
under the TSO authorization. The man-
ufacturer must retain this data until it
no longer manufactures the article. At
that time, copies of the data must be
sent to the FAA;
(g) Retain its TSO authorization and
make it available to the FAA upon re-
quest; and
(h) Make available to the FAA infor-
mation regarding all delegation of au-
thority to suppliers.
§ 21.618
Approval for deviation.
(a) Each manufacturer who requests
approval to deviate from any perform-
ance standard of a TSO must show that
factors or design features providing an
equivalent level of safety compensate
for the standards from which a devi-
ation is requested.
(b) The manufacturer must send re-
quests for approval to deviate, together
with all pertinent data, to the appro-
priate aircraft certification office. If
the article is manufactured under the
authority of a foreign country or juris-
diction, the manufacturer must send
requests for approval to deviate, to-
gether with all pertinent data, through
the civil aviation authority of that
country or jurisdiction to the FAA.
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