14 CFR Part 39 14910-13-UI DEPARTMENT OF TRANSPORTATION Federal Aviation Administration



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# 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 ofTransportation (DOT). ACTION: Final rule; request forcomments. 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 ,O""<:URl\C"'n'S OlJTlN(;HMIIOL 

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'l" ,y", ainvorthiness limitations (AWLs) for fuel tank systems to satisfy Special Federal Aviation Regulation No. 88 requirements. That AD also requITesan initial inspection to phase incertain repetitive AWL inspections, and repair ifnecessary. This AD clarifies the mtcl1dedeffect ofthe AD on spare and on-airplane fuel tank system components. AT~



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alterations, repairs, or maintenance actions, which, incombination with Oammable fuel vapors, could result in a fueltank explosion and consequent loss ofthe airplane. DATES: This AD is effective [illsert date 15days after date ofpublication m the FEDERAL REGISTER]. NTIlAI='"
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~TE FEDERAL REGISTER]. consequent loss ofthe airplane. DATES: This AD iseffective [insert date 15days after date ofpublication inthe 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 oftile 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) forfuel tank systems to satisfy Speci Federal Aviation Administration

SUMMARY: The FAA isrevising an existing airworthiness directive (AD), which ACTION: Final rule; request for comments. (DOT). AGENCY: Federal Aviation Administration (FAA), Department ofTransportation

inspection ofacertain 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 : IIj 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 14CFR Part 3914910-I3-U] DEPARTMENT OFTRANSPORTATION Federal Aviation Administration _ONCURRE"rES O\JT'NG$YNBOI. 14CFR I'art 39 {Docket No. FAA-2009-1 IIIIj Directorate Identifier 2009-NM-165-ADj Amendment 39-**; AD 2008-10-09 Rl) "ITIAtS/'$IG 

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That AD currently requires revising the FAA-approved maintenance program to incorporate new ai.rworthiness limitations (AWLs) for fueltank systems to satisfy Speci Federal Aviation Regulation No. 88 requirements. That AD also requires the initial inspection ofacertain repetitive AWL inspection tophase 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 adesign review ofthe 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 NnlJl.WS1G consequent loss ofthe airplane. DATES: This AD iseffective [insert date 15 days after date ofpubJication inthe FEDERAL REGISTER]. Nmm.s/SIG