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479 

Federal Aviation Administration, DOT 

§ 26.35 

model listed in Table 1 of this section, 
and each person subject to paragraph 
(a)(3)(iii) of this section, must submit 
for approval to the responsible Aircraft 
Certification Service office an assess-
ment of the fuel tank system, as modi-
fied by their design change. The assess-
ment must identify any features of the 
design change that compromise any 
critical design configuration control 
limitation (CDCCL) applicable to any 
airplane on which the design change is 
eligible for installation. 

(1) Holders of supplemental type cer-

tificates and field approvals: Before 
June 26, 2011. 

(2) Applicants for supplemental type 

certificates and for amendments to 
type certificates: Before June 26, 2011 
or before the certificate is issued, 
whichever occurs later. 

T

ABLE

Model—Boeing 

747 Series 
737 Series 
777 Series 
767 Series 
757 Series 

Model—Airbus 

A318, A319, A320, A321 Series 
A300, A310 Series 
A330, A340 Series 

(d) 

Design Changes and Service Instruc-

tions. 

By the times specified in para-

graph (e) of this section, each person 
subject to this section must meet the 
requirements of paragraphs (d)(1) or 
(d)(2) of this section, as applicable. 

(1) For holders and applicants subject 

to paragraph (a)(1) or (a)(3)(iii) of this 
section, if the assessment required by 
paragraph (c) of this section identifies 
any features of the design change that 
compromise any CDCCL applicable to 
any airplane on which the design 
change is eligible for installation, the 
holder or applicant must submit for ap-
proval by the responsible Aircraft Cer-
tification Service office design changes 
and service instructions for Flamma-
bility Impact Mitigation Means 
(FIMM) that would bring the design 
change into compliance with the 

CDCCL. Any fuel tank modified as re-
quired by this paragraph must also be 
evaluated as required by paragraph (b) 
of this section. 

(2) Applicants subject to paragraph 

(a)(2), or (a)(3)(i) of this section must 
comply with the requirements of 14 
CFR 25.981, in effect on December 26, 
2008. 

(3) Applicants subject to paragraph 

(a)(3)(ii) of this section must comply 
with the requirements of 14 CFR 26.33. 

(e) 

Compliance Times for Design 

Changes and Service Instructions. 

The 

following persons subject to this sec-
tion must comply with the require-
ments of paragraph (d) of this section 
at the specified times. 

(1) Holders of supplemental type cer-

tificates and field approvals: Before De-
cember 26, 2012. 

(2) Applicants for supplemental type 

certificates and for amendments to 
type certificates: Before December 26, 
2012, or before the certificate is issued, 
whichever occurs later. 

(f) 

Compliance Planning. 

By the appli-

cable date specified in Table 2 of this 
section, each person subject to para-
graph (a)(1) of this section must submit 
for approval by the responsible Aircraft 
Certification Service office compliance 
plans for the flammability exposure 
analysis required by paragraph (b) of 
this section, the impact assessment re-
quired by paragraph (c) of this section, 
and the design changes and service in-
structions required by paragraph (d) of 
this section. Each person’s compliance 
plans must include the following: 

(1) A proposed project schedule for 

submitting the required analysis or im-
pact assessment. 

(2) A proposed means of compliance 

with paragraph (d) of this section. 

(3) For the requirements of paragraph 

(d) of this section, a proposal for sub-
mitting a draft of all design changes, if 
any are required, and Airworthiness 
Limitations (including CDCCLs) for re-
view by the responsible Aircraft Cer-
tification Service office not less than 
60 days before the compliance time 
specified in paragraph (e) of this sec-
tion. 

(4) For the requirements of paragraph 

(d) of this section, a proposal for how 
the approved service information and 

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