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DEPARTMENT OF TR>\NSPORTATION Federal Aviation Administration 14 CFR Part 39 

# 6').. J; IDocket No. FAA-2008-0181; Directorate Identifier 007-NM-180-AD; Amendme 

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RlN 2120-AA64 Ainvorthiness Directives; Lockheed Model L-l 011 Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUM'MARY: We are adopting anew airworth.iness dir,ctive (AD) for allLockheed Model L-l all series airplanes. This AD requires 

### revisirlg the FAA-approved maintenance program by incorporating new airworthine!s limitations forfuel tank systems to satisfy Special Federal Aviation Regulation

# to. 88 requirements. This AD also requires the accomplishment ofcertain 

### fuel system modifications, the 

### initial inspections ofcertain repetitive fuel system limitations 

# 16phase inthose inspections, an 

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repair ifnecessary. This AD results from adesign revie\ ofthe fuel tank systems. We e issuing this AD to prevent the potential forignjtion sour es inside fueltanks caused by Nm~l-SiS,G latent failures, alterations, repairs, or maintenance actions, which, incombination with flammable fuel vapors, could result inafuel tank explos·on and consequent loss ofthe airplane.

= DATES: This AD iseffective [insert date 35 days after date ofpublication inthe FEDERAL REGISTER]. The Director ofthe Federal Register approved th incorporation byreference of ft,J{lIl-1I NmALSis,G certain publications listed inthis AD asof[insert date 3 days after date ofpublic.ation i 1

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# J the FEDERAL REGISTER]. ADDRESSES: For service information identified inthis AD, contacl Lockheed14910-13-Pj DEPARTMENT OF TRANSPORTAT'ON Federal Aviation Adirlinil'itratioD 14CFR Part 39 (Docket No. FAA·2008--0181; Directorate IdeDtifier 2007·NM·180-AD; Amendment

Airworthiness Directives; Lockheed Model L-IO 11 Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting anew airworthiness directive (AD) for allioCkheed Model L-IOll series airplanes. This AD requires revising the FAA-approved maintenance program by incorporating new airworthiness limitations for fuella!l-k systems to satisfy Special Federal Aviation Regulation No. 88 reqwremen4. This AD also requires the accomplishment ofcertain fuel system modifications, ~elinitial inspe~ions of certain repetitive fuel system limitations to phase inthose irpt:ctions, and repair ifn~. This AD results from adesign review ofthe fuel tank sfms. We are issuing this AD to prevent the potential for ignition sources inside fuel

# mar caused by latent failures, alterations, repairs, ormaintenance actions, Which, in combiiJati9n with flammable fuel vapors, could result in a fuel tank explosion and conseque~ loss of-the airplane
.. DATES: This AD is effective [insert date 35 days after date ofpublicatio in the FEDERAL REGISTER]. The Director of the Federal Register approved the incorporation by reference of certain publications listed inthis AD as of{inscrt date 35 days after date 0lpublication in the FEDERAL REGISTER].
. . ADDRESSES: For service information identified inthis AD. contact LocKheed

FAA Form 1360-1.4.1 (S-B9) OFFICIAL FILE COPY