background image

471 

Federal Aviation Administration, DOT 

§ 26.5 

as critical as the specific ice accretion de-
fined for that flight phase. Configuration dif-
ferences and their effects on ice accretions 
must be taken into account. 

(f) The ice accretion that has the most ad-

verse effect on handling qualities may be 
used for airplane performance tests provided 
any difference in performance is conserv-
atively taken into account. 

[Amdt. 25–140, 79 FR 65528, Nov. 4, 2014] 

PART 26—CONTINUED AIRWORTHI-

NESS AND SAFETY IMPROVE-
MENTS FOR TRANSPORT CAT-
EGORY AIRPLANES 

Subpart A—General 

Sec. 
26.1

Purpose and scope. 

26.3

[Reserved] 

26.5

Applicability table. 

Subpart B—Enhanced Airworthiness 

Program for Airplane Systems 

26.11

Electrical wiring interconnection sys-

tems (EWIS) maintenance program. 

Subpart C—Aging Airplane Safety— 

Widespread Fatigue Damage 

26.21

Limit of validity. 

26.23

Extended limit of validity. 

Subpart D—Fuel Tank Flammability 

26.31

Definitions. 

26.33

Holders of type certificates: Fuel tank 

flammability. 

26.35

Changes to type certificates affecting 

fuel tank flammability. 

26.37

Pending type certification projects: 

Fuel tank flammability. 

26.39

Newly produced airplanes: Fuel tank 

flammability. 

Subpart E—Aging Airplane Safety—Dam-

age Tolerance Data for Repairs and 
Alterations 

26.41

Definitions. 

26.43

Holders of and applicants for type cer-

tificates—Repairs. 

26.45

Holders of type certificates—Alter-

ations and repairs to alterations. 

26.47

Holders of and applicants for a supple-

mental type certificate—Alterations and 
repairs to alterations. 

26.49

Compliance plan. 

A

UTHORITY

: 49 U.S.C. 106(g), 40113, 44701, 

44702 and 44704. 

S

OURCE

: Docket No. FAA–2004–18379, 72 FR 

63409, Nov. 8, 2007, unless otherwise noted. 

Subpart A—General 

§ 26.1

Purpose and scope. 

(a) This part establishes require-

ments for support of the continued air-
worthiness of and safety improvements 
for transport category airplanes. These 
requirements may include performing 
assessments, developing design 
changes, developing revisions to In-
structions for Continued Airworthiness 
(ICA), and making necessary docu-
mentation available to affected per-
sons. Requirements of this part that 
establish standards for design changes 
and revisions to the ICA are considered 
airworthiness requirements. 

(b) Except as provided in paragraph 

(c) of this section, this part applies to 
the following persons, as specified in 
each subpart of this part: 

(1) Holders of type certificates and 

supplemental type certificates. 

(2) Applicants for type certificates 

and supplemental type certificates and 
changes to those certificates (including 
service bulletins describing design 
changes). 

(3) Persons seeking design approval 

for airplane repairs, alterations, or 
modifications that may affect air-
worthiness. 

(4) Holders of type certificates and 

their licensees producing new air-
planes. 

(c) An applicant for approval of a de-

sign change is not required to comply 
with any applicable airworthiness re-
quirement of this part if the applicant 
elects or is required to comply with a 
corresponding amendment to part 25 of 
this chapter that is adopted concur-
rently or after that airworthiness re-
quirement. 

(d) For the purposes of this part, the 

word ‘‘type certificate’’ does not in-
clude supplemental type certificates. 

§ 26.3

[Reserved] 

§ 26.5

Applicability table. 

Table 1 of this section provides an 

overview of the applicability of this 
part. It provides guidance in identi-
fying what sections apply to various 
types of entities. The specific applica-
bility of each subpart and section is 
specified in the regulatory text. 

VerDate Sep<11>2014 

09:06 Jun 28, 2024

Jkt 262046

PO 00000

Frm 00481

Fmt 8010

Sfmt 8010

Y:\SGML\262046.XXX

262046

jspears on DSK121TN23PROD with CFR

background image

472 

14 CFR Ch. I (1–1–24 Edition) 

§ 26.11 

T

ABLE

1—A

PPLICABILITY OF

P

ART

26 R

ULES

 

Applicable sections 

Subpart B EAPAS/FTS 

Subpart C widespread 

fatigue damage 

Subpart D fuel tank 

flammability 

Subpart E dam-

age 

tolerance data 

Effective date of rule ..................

December 10, 2007 ....

January 14, 2011 ........

December 26, 2008 ....

January 11, 

2008 

Existing

1

TC Holders .................

26.11 ...........................

26.21 ...........................

26.33 ...........................

26.43, 26.45, 

26.49 

Pending

1

TC Applicants ............

26.11 ...........................

26.21 ...........................

26.37 ...........................

26.43, 26.45 

Future

2

TC applicants ...............

N/A ..............................

N/A ..............................

N/A ..............................

26.43 

Existing

1

STC Holders ..............

N/A ..............................

26.21 ...........................

26.35 ...........................

26.47, 26.49 

Pending

1

STC/ATC applicants ..

26.11 ...........................

26.21 ...........................

26.35 ...........................

26.45, 26.47, 

26.49 

Future

2

STC/ATC applicants .....

26.11 ...........................

26.21 ...........................

26.35 ...........................

26.45, 26.47, 

26.49 

Manufacturers ............................

N/A ..............................

N/A ..............................

26.39 ...........................

N/A 

1

As of the effective date of the identified rule. 

2

Application made after the effective date of the identified rule. 

[Doc. No. FAA–2006–24281, 75 FR 69782, Nov. 15, 2010] 

Subpart B—Enhanced Airworthi-

ness Program for Airplane 
Systems 

§ 26.11

Electrical wiring interconnec-

tion systems (EWIS) maintenance 
program. 

(a) Except as provided in paragraph 

(g) of this section, this section applies 
to transport category, turbine-powered 
airplanes with a type certificate issued 
after January 1, 1958, that, as a result 
of the original certification, or later 
increase in capacity, have— 

(1) A maximum type-certificated pas-

senger capacity of 30 or more or 

(2) A maximum payload capacity of 

7,500 pounds or more. 

(b) Holders of, and applicants for, 

type certificates, as identified in para-
graph (d) of this section must develop 
Instructions for Continued Airworthi-
ness (ICA) for the representative air-
plane’s EWIS in accordance with part 
25, Appendix H paragraphs H25.5(a)(1) 
and (b) of this subchapter in effect on 
December 10, 2007 for each affected type 
design, and submit those ICA for re-
view and approval by the responsible 
Aircraft Certification Service office. 
For purposes of this section, the ‘‘rep-
resentative airplane’’ is the configura-
tion of each model series airplane that 
incorporates all variations of EWIS 
used in production on that series air-
plane, and all TC-holder-designed 
modifications mandated by airworthi-
ness directive as of the effective date of 

this rule. Each person specified in para-
graph (d) of this section must also re-
view any fuel tank system ICA devel-
oped by that person to comply with 
SFAR 88 to ensure compatibility with 
the EWIS ICA, including minimizing 
redundant requirements. 

(c) Applicants for amendments to 

type certificates and supplemental 
type certificates, as identified in para-
graph (d) of this section, must: 

(1) Evaluate whether the design 

change for which approval is sought ne-
cessitates a revision to the ICA re-
quired by paragraph (b) of this section 
to comply with the requirements of Ap-
pendix H, paragraphs H25.5(a)(1) and 
(b). If so, the applicant must develop 
and submit the necessary revisions for 
review and approval by the responsible 
Aircraft Certification Service office. 

(2) Ensure that any revised EWIS ICA 

remain compatible with any fuel tank 
system ICA previously developed to 
comply with SFAR 88 and any redun-
dant requirements between them are 
minimized. 

(d) The following persons must com-

ply with the requirements of paragraph 
(b) or (c) of this section, as applicable, 
before the dates specified. 

(1) Holders of type certificates (TC): 

December 10, 2009. 

(2) Applicants for TCs, and amend-

ments to TCs (including service bul-
letins describing design changes), if the 
date of application was before Decem-
ber 10, 2007 and the certificate was 

VerDate Sep<11>2014 

09:06 Jun 28, 2024

Jkt 262046

PO 00000

Frm 00482

Fmt 8010

Sfmt 8010

Y:\SGML\262046.XXX

262046

jspears on DSK121TN23PROD with CFR