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264 

14 CFR Ch. I (1–1–24 Edition) 

§ 121.1115 

(d) The proposed fuel tank system 

maintenance program revisions must 
be based on fuel tank system Instruc-
tions for Continued Airworthiness 
(ICA) that have been developed in ac-
cordance with the applicable provisions 
of SFAR 88 of this chapter or § 25.1529 
and part 25, Appendix H, of this chap-
ter, in effect on June 6, 2001 (including 
those developed for auxiliary fuel 
tanks, if any, installed under supple-
mental type certificates or other de-
sign approval) and that have been ap-
proved by the responsible Aircraft Cer-
tification Service office. 

(e) After December 16, 2008, before re-

turning an aircraft to service after any 
alteration for which fuel tank ICA are 
developed under SFAR 88 or under 
§ 25.1529 in effect on June 6, 2001, the 
certificate holder must include in the 
maintenance program for the airplane 
inspections and procedures for the fuel 
tank system based on those ICA. 

(f) The fuel tank system maintenance 

program changes identified in para-
graphs (d) and (e) of this section and 
any later fuel tank system revisions 
must be submitted to the Principal In-
spector for review and approval. 

(g) This section does not apply to the 

following airplane models: 

(1) Bombardier CL–44 
(2) Concorde 
(3) deHavilland D.H. 106 Comet 4C 
(4) VFW–Vereinigte Flugtechnische 

Werk VFW–614 

(5) Illyushin Aviation IL 96T 
(6) Bristol Aircraft Britannia 305 
(7) Handley Page Herald Type 300 
(8) Avions Marcel Dassault—Breguet 

Aviation Mercure 100C 

(9) Airbus Caravelle 
(10) Lockheed L–300 

[Amdt. 121–336, 72 FR 63411, Nov. 8, 2007, as 
amended by Docket FAA–2018–0119, Amdt. 
121–380, 83 FR 9173, Mar. 5, 2018] 

§ 121.1115 Limit of validity. 

(a) 

Applicability. 

This section applies 

to certificate holders operating any 
transport category, turbine-powered 
airplane with a maximum takeoff gross 
weight greater than 75,000 pounds and a 
type certificate issued after January 1, 
1958, regardless of whether the max-
imum takeoff gross weight is a result 
of an original type certificate or a 
later design change. This section also 

applies to certificate holders operating 
any transport category, turbine-pow-
ered airplane with a type certificate 
issued after January 1, 1958, regardless 
of the maximum takeoff gross weight, 
for which a limit of validity of the en-
gineering data that supports the struc-
tural maintenance program (hereafter 
referred to as LOV) is required in ac-
cordance with § 25.571 or § 26.21 of this 
chapter after January 14, 2011. 

(b) 

Limit of validity. 

No certificate 

holder may operate an airplane identi-
fied in paragraph (a) of this section 
after the applicable date identified in 
Table 1 of this section unless an Air-
worthiness Limitations section ap-
proved under Appendix H to part 25 or 
§ 26.21 of this chapter is incorporated 
into its maintenance program. The 
ALS must— 

(1) Include an LOV approved under 

§ 25.571 or § 26.21 of this chapter, as ap-
plicable, except as provided in para-
graph (f) of this section; and 

(2) Be clearly distinguishable within 

its maintenance program. 

(c) 

Operation of airplanes excluded 

from § 26.21. 

No certificate holder may 

operate an airplane identified in 
§ 26.21(g) of this chapter after July 14, 
2013, unless an Airworthiness Limita-
tions section approved under Appendix 
H to part 25 or § 26.21 of this chapter is 
incorporated into its maintenance pro-
gram. The ALS must— 

(1) Include an LOV approved under 

§ 25.571 or § 26.21 of this chapter, as ap-
plicable, except as provided in para-
graph (f) of this section; and 

(2) Be clearly distinguishable within 

its maintenance program. 

(d) 

Extended limit of validity. 

No cer-

tificate holder may operate an airplane 
beyond the LOV, or extended LOV, 
specified in paragraph (b)(1), (c), (d), or 
(f) of this section, as applicable, unless 
the following conditions are met: 

(1) An ALS must be incorporated into 

its maintenance program that— 

(i) Includes an extended LOV and any 

widespread fatigue damage airworthi-
ness limitation items approved under 
§ 26.23 of this chapter; and 

(ii) Is approved under § 26.23 of this 

chapter. 

(2) The extended LOV and the air-

worthiness limitation items pertaining 
to widespread fatigue damage must be 

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265 

Federal Aviation Administration, DOT 

§ 121.1115 

clearly distinguishable within its 
maintenance program. 

(e) 

Principal Maintenance Inspector ap-

proval. 

Certificate holders must submit 

the maintenance program revisions re-
quired by paragraphs (b), (c), and (d) of 
this section to the Principal Mainte-
nance Inspector for review and ap-
proval. 

(f) 

Exception. 

For any airplane for 

which an LOV has not been approved as 
of the applicable compliance date spec-
ified in paragraph (c) or Table 1 of this 
section, instead of including an ap-
proved LOV in the ALS, an operator 
must include the applicable default 
LOV specified in Table 1 or Table 2 of 
this section, as applicable, in the ALS. 

T

ABLE

1—A

IRPLANES

S

UBJECT TO

§ 26.21 

Airplane model 

Compliance date— 

months after Janu-

ary 14, 2011 

Default LOV 

[flight cycles (FC) 

or flight hours (FH)] 

Airbus—Existing

1

Models Only: 

A300 B2–1A, B2–1C, B2K–3C, B2–203 ....................................................

30 ..........................

48,000 FC 

A300 B4–2C, B4–103 ................................................................................

30 ..........................

40,000 FC 

A300 B4–203 .............................................................................................

30 ..........................

34,000 FC 

A300–600 Series ........................................................................................

60 ..........................

30,000 FC/67,500 FH 

A310–200 Series ........................................................................................

60 ..........................

40,000 FC/60,000 FH 

A310–300 Series ........................................................................................

60 ..........................

35,000 FC/60,000 FH 

A318 Series ................................................................................................

60 ..........................

48,000 FC/60,000 FH 

A319 Series ................................................................................................

60 ..........................

48,000 FC/60,000 FH 

A320–100 Series ........................................................................................

60 ..........................

48,000 FC/48,000 FH 

A320–200 Series ........................................................................................

60 ..........................

48,000 FC/60,000 FH 

A321 Series ................................................................................................

60 ..........................

48,000 FC/60,000 FH 

A330–200, –300 Series (except WV050 family) (non enhanced) .............

60 ..........................

40,000 FC/60,000 FH 

A330–200, –300 Series WV050 family (enhanced) ..................................

60 ..........................

33,000 FC/100,000 FH 

A330–200 Freighter Series ........................................................................

60 ..........................

See NOTE. 

A340–200, –300 Series (except WV 027 and WV050 family) (non en-

hanced).

60 ..........................

20,000 FC/80,000 FH 

A340–200, –300 Series WV 027 (non enhanced) .....................................

60 ..........................

30,000 FC/60,000 FH 

A340–300 Series WV050 family (enhanced) .............................................

60 ..........................

20,000 FC/100,000 FH 

A340–500, –600 Series .............................................................................

60 ..........................

16,600 FC/100,000 FH 

A380–800 Series ........................................................................................

72 ..........................

See NOTE. 

Boeing—Existing

1

Models Only: 

717 .............................................................................................................

60 ..........................

60,000 FC/60,000 FH 

727 (all series) ...........................................................................................

30 ..........................

60,000 FC 

737 (Classics): 737–100, –200, –200C, –300, –400, –500 .......................

30 ..........................

75,000 FC 

737 (NG): 737–600, –700, –700C, –800, –900, –900ER ..........................

60 ..........................

75,000 FC 

747 (Classics): 747–100, –100B, –100B SUD, –200B, –200C, –200F, 

–300, 747SP, 747SR.

30 ..........................

20,000 FC 

747–400: 747–400, –400D, –400F ............................................................

60 ..........................

20,000 FC 

757 .............................................................................................................

60 ..........................

50,000 FC 

767 .............................................................................................................

60 ..........................

50,000 FC 

777–200, –300 ...........................................................................................

60 ..........................

40,000 FC 

777–200LR, 777–300ER ............................................................................

72 ..........................

40,000 FC 

777F ...........................................................................................................

72 ..........................

11,000 FC 

Bombardier—Existing

1

Models Only: 

CL–600: 2D15 (Regional Jet Series 705), 2D24 (Regional Jet Series 

900).

72 ..........................

60,000 FC 

Embraer—Existing

1

Models Only: 

ERJ 170 .....................................................................................................

72 ..........................

See NOTE. 

ERJ 190 .....................................................................................................

72 ..........................

See NOTE. 

Fokker—Existing

1

Models Only: 

F.28 Mark 0070, Mark 0100 ......................................................................

30 ..........................

90,000 FC 

Lockheed—Existing

1

Models Only: 

L–1011 .......................................................................................................

30 ..........................

36,000 FC 

188 .............................................................................................................

30 ..........................

26,600 FC 

382 (all series) ...........................................................................................

30 ..........................

20,000 FC/50,000 FH 

McDonnell Douglas—Existing

1

Models Only: 

DC–8, –8F ..................................................................................................

30 ..........................

50,000 FC/50,000 FH 

DC–9 (except for MD–80 models) .............................................................

30 ..........................

100,000 FC/100,000 

FH 

MD–80 (DC–9–81, –82, –83, –87, MD–88) ...............................................

30 ..........................

50,000 FC/50,000 FH 

MD–90 ........................................................................................................

60 ..........................

60,000 FC/90,000 FH 

DC–10–10, –15 ..........................................................................................

30 ..........................

42,000 FC/60,000 FH 

DC–10–30, –40, –10F, –30F, –40F ...........................................................

30 ..........................

30,000 FC/60,000 FH 

MD–10–10F ................................................................................................

60 ..........................

42,000 FC/60,000 FH 

MD–10–30F ................................................................................................

60 ..........................

30,000 FC/60,000 FH 

MD–11, MD–11F ........................................................................................

60 ..........................

20,000 FC/60,000 FH 

Maximum Takeoff Gross Weight Changes: 

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266 

14 CFR Ch. I (1–1–24 Edition) 

§ 121.1117 

T

ABLE

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IRPLANES

S

UBJECT TO

§ 26.21—Continued 

Airplane model 

Compliance date— 

months after Janu-

ary 14, 2011 

Default LOV 

[flight cycles (FC) 

or flight hours (FH)] 

All airplanes whose maximum takeoff gross weight has been decreased 

to 75,000 pounds or below after January 14, 2011, or increased to 
greater than 75,000 pounds at any time by an amended type certifi-
cate or supplemental type certificate.

30, or within 12 

months after the 
LOV is ap-
proved, or be-
fore operating 
the airplane, 
whichever oc-
curs latest.

Not applicable. 

All Other Airplane Models (TCs and amended TCs) not Listed in Table 2 .............

72, or within 12 

months after the 
LOV is ap-
proved, or be-
fore operating 
the airplane, 
whichever oc-
curs latest.

Not applicable. 

1

Type certificated as of January 14, 2011. 

Note: Airplane operation limitation is stated in the Airworthiness Limitation section. 

T

ABLE

2—A

IRPLANES

E

XCLUDED

F

ROM

§ 26.21 

Airplane model 

Default LOV 

[flight cycles (FC) 

or flight hours 

(FH)] 

Airbus: 

Caravelle ...................................

15,000 FC/24,000 

FH 

Avions Marcel Dassault: 

Breguet Aviation Mercure 100C 

20,000 FC/16,000 

FH 

Boeing: 

Boeing 707 (–100 Series and 

–200 Series) ..........................

20,000 FC 

Boeing 707 (–300 Series and 

–400 Series) ..........................

20,000 FC 

Boeing 720 ................................

30,000 FC 

Bombardier: 

CL–44D4 and CL–44J ..............

20,000 FC 

BD–700 .....................................

15,000 FC 

Bristol Aeroplane Company: 

Britannia 305 .............................

10,000 FC 

British Aerospace Airbus, Ltd.: 

BAC 1–11 (all models) ..............

85,000 FC 

British Aerospace (Commercial Aircraft) 

Ltd.: 

Armstrong Whitworth Argosy 

A.W. 650 Series 101 .............

20,000 FC 

BAE Systems (Operations) Ltd.: 

BAe 146–100A (all models) ......

50,000 FC 

BAe 146–200–07 ......................

50,000 FC 

BAe 146–200–07 Dev ...............

50,000 FC 

BAe 146–200–11 ......................

50,000 FC 

BAe 146–200–07A ....................

47,000 FC 

BAe 146–200–11 Dev ...............

43,000 FC 

BAe 146–300 (all models) ........

40,000 FC 

Avro 146–RJ70A (all models) ...

40,000 FC 

Avro 146–RJ85A and 146– 

RJ100A (all models) ..............

50,000 FC 

D & R Nevada, LLC: 

Convair Model 22 ......................

1,000 FC/1,000 

FH 

Convair Model 23M ...................

1,000 FC/1,000 

FH 

deHavilland Aircraft Company, Ltd.: 

D.H. 106 Comet 4C ..................

8,000 FH 

Gulfstream: 

GV .............................................

40,000 FH 

GV–SP ......................................

40,000 FH 

T

ABLE

2—A

IRPLANES

E

XCLUDED

F

ROM

 

§ 26.21—Continued 

Airplane model 

Default LOV 

[flight cycles (FC) 

or flight hours 

(FH)] 

Ilyushin Aviation Complex: 

IL–96T .......................................

10,000 FC/30,000 

FH 

Lockhead: 

300–50A01(USAF C 141A) .......

20,000 FC 

[Doc. No. FAA–2006–24281, 75 FR 69785, Nov. 
15, 2010, as amended by Amdt. 121–360, 77 FR 
30878, May 24, 2012; Admt. 121–360A, 77 FR 
55105, Sept. 7, 2012; Doc. No. FAA–2022–1355; 
Amdt. 121–387, 87 FR 75847, Dec. 9, 2022] 

§ 121.1117 Flammability reduction 

means. 

(a) 

Applicability. 

Except as provided 

in paragraph (o) 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 original type cer-
tification 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) 

New Production Airplanes. 

Except 

in accordance with § 121.628, no certifi-
cate holder may operate an airplane 
identified in Table 1 of this section (in-
cluding all-cargo airplanes) for which 
the State of Manufacture issued the 
original certificate of airworthiness or