14 CFR Part 39

14910-13-UI

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

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{Docket No. FAA-2009-+++++; Directorate Identifier 2009-NM-165-AD;

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Amendment 3JJ' ; AD 2008-10-09 RlI

RlN 2120-AA64

Airwortbiness Directives; The Boeing Company Model 737-100, -200, -20De, -300,

-400, and -500 Series Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of Transportation

(DOT).

ACTION: Final rule; request for comments.

SUMMARY: The FAA is revising an existing airworthiness directive (AD), which

applies to all Model737-100, -200, -20De, -300, -400, and -500 series airplanes. That AI

currently requires revising the FAA-approved maintenance program to incorporate new

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ainvorthiness limitations (AWLs) for fuel tank systems to satisfy Special Federal

Aviation Regulation No. 88 requirements. That AD also requITes an initial inspection to

phase in certain repetitive AWL inspections, and repair if necessary. This AD clarifies

the mtcl1ded effect of the AD on spare and on-airplane fuel tank system components.

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That AD results from a design review oftbe fuel tank system. We are issuing lllis AD to. '"

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prevent the potential for ignition sources inside fuel tanks caused by latent failures,

alterations, repairs, or maintenance actions, which, in combination with Oammable fuel

vapors, could result in a fuel tank explosion and consequent loss of the airplane.

DATES: This AD is effective [illsert date 15 days after date of publication m the

FEDERAL REGISTER].

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consequent loss of the airplane.

DATES: This AD is effective [insert date 15 days after date of publication in the

combination with flammable fuel vapors, could result in a fuel tank explosion and

caused by latent failures, alterations, repairs, or maintenance actions, which, in

We are issuing this AD to prevent the potential for ignition sources inside fuel tanks

tank system components. That AD results from a design review ofthe fuel tank system.

necessary. This AD clarifies the intended effect of tile AD on spare and on-airplane fue

Federal Aviation Regulation No. 88 requirements. That AD also requires the initial

That AD currently requires revising the FAA-approved maintenance program to

incorporate new airworthiness limitations (AWLs) for fuel tank systems to satisfy Speci

Federal Aviation Administration

SUMMARY: The FAA is revising an existing airworthiness directive (AD), which

ACTION: Final rule; request for comments.

(DOT).

AGENCY: Federal Aviation Administration (FAA), Department of Transportation

inspection of a certain repetitive AWL inspection to phase in that inspection, and repair

Airworthiness Directives; Boeing Model 737-100, -200, -20De, -300, -400, and -500

rDocket No. FAA-2009-1 i : I Ij Directorate Identifier 2009-NM-165-ADj

applies to all Boeing Model 737-100, -200, -20De, -300, ADO, and -SODseries airplanes

Series Airplanes

AmendmenI39-**; AD 2008-10-09 RIJ

RIN 2120-AA64

14 CFR Part 39
14910-I3-U]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration _ONCURRE"rES

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14 CFR I'art 39

{Docket No. FAA-2009-1 I I I Ij Directorate Identifier 2009-NM-165-ADj

Amendment 39-**; AD 2008-10-09 Rl)

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ACTION: Final rule; request for comments.

AGENCY: Federal Aviation Administration (FAA), Department ofTransportatiol1

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SUMMARY: The FAA is revising an existing airworthiness directive (AD), which u",,~S.rnbol

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applies to all Boeing Model 737-100, -200, -20De, -300, ADO, and -500 series airplanes. I<ITV.LS,ISIG -

(DOT).

That AD currently requires revising the FAA-approved maintenance program to

incorporate new ai.rworthiness limitations (AWLs) for fuel tank systems to satisfy Speci

Federal Aviation Regulation No. 88 requirements. That AD also requires the initial

inspection of a certain repetitive AWL inspection to phase in that inspection, and repair

necessary. This AD clarifies the intended effect ofthe AD on spare and on-airplane fue!

tank system components. That AD results from a design review of the fuel tank system.

We are issuing thjs AD to prevent the potential for ignition sources inside fuel tanks

AT~

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caused by latent failures, alterations, repajrs, or maintenance actions, which, in

combination with flammable fuel vapors, could result in a fucl tank explosion and

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consequent loss of the airplane.

DATES: This AD is effective [insert date 15 days after date ofpubJication in the

FEDERAL REGISTER].

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