253 

Federal Aviation Administration, DOT 

§ 121.1117 

Means (FIMM), if applicable, that is 
approved by the responsible Aircraft 
Certification Service office. 

(3) Except in accordance with 

§ 121.628, the FIMM, if applicable, is 
operational. 

(d) 

Retrofit. 

Except as provided in 

paragraphs (j), (k), and (l) of this sec-
tion, after the dates specified in para-
graph (e) of this section, no certificate 
holder may operate an airplane to 
which this section applies unless the 
requirements of paragraphs (d)(1) and 
(d)(2) of this section are met. 

(1) IMM, FRM or FIMM, if required 

by §§ 26.33, 26.35, or 26.37 of this chapter, 
that are approved by the responsible 
Aircraft Certification Service office, 
are installed within the compliance 
times specified in paragraph (e) of this 
section. 

(2) Except in accordance with 

§ 121.628, the IMM, FRM or FIMM, as 
applicable, are operational. 

(e) 

Compliance Times. 

Except as pro-

vided in paragraphs (k) and (l) of this 
section, the installations required by 
paragraph (d) of this section must be 
accomplished no later than the appli-
cable dates specified in paragraph 
(e)(1), (e)(2), or (e)(3) of this section. 

(1) Fifty percent of each certificate 

holder’s fleet identified in paragraph 
(d)(1) of this section must be modified 
no later than December 26, 2014. 

(2) One hundred percent of each cer-

tificate holder’s fleet identified in 
paragraph (d)(1) of this section must be 
modified no later than December 26, 
2017. 

(3) For those certificate holders that 

have only one airplane of a model iden-
tified in Table 1 of this section, the air-
plane must be modified no later than 
December 26, 2017. 

(f) 

Compliance After Installation. 

Ex-

cept in accordance with § 121.628, no 
certificate holder may— 

(1) Operate an airplane on which IMM 

or FRM has been installed before the 
dates specified in paragraph (e) of this 
section unless the IMM or FRM is oper-
ational, or 

(2) Deactivate or remove an IMM or 

FRM once installed unless it is re-
placed by a means that complies with 
paragraph (d) of this section. 

(g) 

Maintenance Program Revisions. 

No 

certificate holder may operate an air-

plane for which airworthiness limita-
tions have been approved by the re-
sponsible Aircraft Certification Service 
office in accordance with §§ 26.33, 26.35, 
or 26.37 of this chapter after the air-
plane is modified in accordance with 
paragraph (d) of this section unless the 
maintenance program for that airplane 
is revised to include those applicable 
airworthiness limitations. 

(h) After the maintenance program is 

revised as required by paragraph (g) of 
this section, before returning an air-
plane to service after any alteration 
for which airworthiness limitations are 
required by §§ 25.981, 26.33, or 26.37 of 
this chapter, the certificate holder 
must revise the maintenance program 
for the airplane to include those air-
worthiness limitations. 

(i) The maintenance program 

changes identified in paragraphs (g) 
and (h) of this section must be sub-
mitted to the operator’s Principal 
Maintenance Inspector responsible for 
review and approval prior to incorpora-
tion. 

(j) The requirements of paragraph (d) 

of this section do not apply to air-
planes operated in all-cargo service, 
but those airplanes are subject to para-
graph (f) of this section. 

(k) The compliance dates specified in 

paragraph (e) of this section may be ex-
tended by one year, provided that— 

(1) No later than March 26, 2009, the 

certificate holder notifies its respon-
sible Flight Standards office or Prin-
cipal Inspector that it intends to com-
ply with this paragraph; 

(2) No later than June 24, 2009, the 

certificate holder applies for an amend-
ment to its operations specification in 
accordance with § 119.51 of this chapter 
and revises the manual required by 
§ 121.133 to include a requirement for 
the airplane models specified in Table 2 
of this section to use ground air condi-
tioning systems for actual gate times 
of more than 30 minutes, when avail-
able at the gate and operational, when-
ever the ambient temperature exceeds 
60 degrees Fahrenheit; and 

(3) Thereafter, the certificate holder 

uses ground air conditioning systems 
as described in paragraph (k)(2) of this 
section on each airplane subject to the 
extension. 

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