(4910-13-PI

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 a new airworth.iness dir,ctive (AD) for all Lockheed

Model L-l all series airplanes. This AD requires revisirlg the FAA-approved

maintenance program by incorporating new airworthine!s limitations for fuel tank

systems to satisfy Special Federal Aviation Regulation to. 88 requirements. This AD

also requires the accomplishment of certain fuel system modifications, the initial

inspections of certain repetitive fuel system limitations 16 phase in those inspections, an

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repair if necessary. This AD results from a design revie\ of the fuel tank systems. We e

issuing this AD to prevent the potential for ignjtion sour es inside fuel tanks caused by

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latent failures, alterations, repairs, or maintenance actions, which, in combination with

flammable fuel vapors, could result in a fuel tank explos·on and consequent loss of the

airplane.

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DATES: This AD is effective [insert date 35 days after date of publication in the

FEDERAL REGISTER].

The Director of the Federal Register approved th incorporation by reference of ft,J{lIl-1I

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certain publications listed in this AD as of[insert date 3 days after date of public.ation i 1 -J

the FEDERAL REGISTER].

ADDRESSES: For service information identified in this AD, contacl Lockheed
14910-13-Pj

DEPARTMENT OF TRANSPORTAT'ON

Federal Aviation Adirlinil'itratioD

14 CFR Part 39

(Docket No. F AA·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 a new 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 of certain fuel system modifications, ~elinitial

inspe~ions of certain repetitive fuel system limitations to phase in those irpt:ctions, and

repair ifn~. This AD results from a design review of the fuel tank sfms. We are

issuing this AD to prevent the potential for ignition sources inside fuel mar caused by

latent failures, alterations, repairs, or maintenance 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 in this AD as of{inscrt date 35 days after date 0lpublication in

the FEDERAL REGISTER]. . .

ADDRESSES: For service information identified in this AD. contact LocKheed

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