25974 

### Federal Register! Vol. 73, No. 90! Thursday, May 8, 2008! Rules and Regulations

[2JTorequ~stadifferent mathod uf I:ornpliance oradifferent compliance time forthis AD,fol!c)wthe procedlll"CS ill 14CFR 3819. Befo", u5ing~nyapproved AMOCon lillYairplanc towhich theAMOCapplies, !lotifyyour "pprOj.Jriateprincipal insp~ctor [PI)intl", f/\A rlighl Standards District Office [FSDO),orlacking aPI.your local FSDO, Materiallncurpurated byReferen(;e (lJYoumust use Boeing737-100/2001 200C/300/400/500 Airworthine:;, Limitations [:\"VLs)an'dCertific~tion Maintenance Rcquirements (CMRs).D6-38278-eMR. Ruvisiot.lMarch2008.to dothe actions required bythis AD,uuiu.s theADs[.lec:ifies otherwisc. (1)The DirectorofthoFedoral Rcgiste, approved the i"~orporation byrderenGe of this ~crviceinformation under 5U,S.c. 552[a)and 1CFRpart 51, (~1Forservicc itlformation identified in this AD.COli

tactBoeingCommercial Airplanes, P.O,Box3707. Seattle. Washington 98124-2207, (3)Youmayrevi~w ~opies ofthe ~ervi~e infonn3lion ltlcorpamted byreference althc FAA,Tran~pDrtAirplane Directorate, 1601 LindAvenuo, SW

..Renton, Waslliugtoli; 01'at the National Archives and ReGords Administratiun (NARA).ForinforrnJtioD Ull the availability ofthis material atNARA,c,,11 20~-H1-,6030, orgoto: http:// tl'wlv.nrchi ves.gol'/lodorol]egi slar/ code_"

# r Jedorol]clJu lotions/ ibc1oc"tirms.hlml. issued illReuton, Washingtou, onApril 29.
2ll0B. AliBahram!, Marwger, Twnsport Airpl"ne Directorate, Airemlt CllrtifiCClUoll Service.
IFRDoc. E8-9822 Filed 5··7-08; 8;45 ami

61LliNG CODE 4910_1J_P

DEPARTMENT OFTRANSPORTATION

Federal Aviation Administration

14CFR Parl39 jDocket No.FAA-2006-26710; Directorale Identifier 2006-NM-147-AD; Amendmenl 39-15517; AD2008-'10-11j

RIN2120-AA64

Ahworthiness Directives; Boeing Model 757 Airplanes

AGENCY:

Feder3l Aviation l\dministratioll (FAA), Depilrtment or 'J'ran:;portatiOIl (DOT). ACTION: Finalruie.
SUMMARY;

The FAA is adopting anew airworthines:; directive (AD] for aU Boeing Model 757 airplane~. This AD requires revising the Airw,orthiness Limitation~ (AWLs) section ofthe InstructiDIlS for Continued Airworthiness by incorporating new Iimitation~ for fuel tank systems to satisfy Special Federal Aviation Regulation No, 88 requirement:;. This AD also requires the initial in:;plJction of certilin repetiti veAWL inspections to phase-in those in:;pectiOlls, and repair if necA~sary. Thi:; AD re~ulls from a design review ofthe fucl tank systems, We are issuing this AD to prevent the potential for ignition sources Inside fuel tanks caused by latent failures, alterations, repairs, 01'maintenance actions, which, in combination with flammable fuel vapors, could result iu a fuel tank explosion and COll5equent loss ofths ilirplane.
DATES:This AD becomes effective June 12.200B. TiJe DirCl:tor ofthe Federal Registf!r approved the incorporation by reference ofa certain public;ation listed in the AD

as ofjune 12, 2008. ADDRESSES:

Far service information identified in this AD. contact Boeing Commercial Airplanes. P.O. Box 370'7. Seattle, Washington 98124-2207. 

### Examining theADDocket
You may examine the AD docket on Lheillternetat http:// Il'ww,reglJlalian.<;,gol'; or in person at the Docket Management Facility between 9
a,m. and 5 p.m., Monday through Friday, except Federal holidays The AD ducket contains this AD. the regulatory evaluation. any comments received, and other information, Thc addrcss forthe Docket orfICe [telephone 800-547-5527) is the Document Management Facility, U,S. Department ofTnillSportation, Doch~t Operations, M-30. West Building Ground Floor, Room W12-140, 12UONew Jersey ,"'venue, SE., Washington, DC20590, FORFURTHER

INFORMATION

CONTACT:

Judy Coyle, Aerospace Engineer. Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certifir.ation Office, 1501 Lind Avenue, SW

.. Renton. Washington 98057-3355; telephone [425) 917-6497, fax (425) 917-6590, SUPPLEMENTARY

INFORMATION:
Di~cu~~ion
The FAA issued asupplemental notice ofpl'Oposed rulemaking [NPRM) to amend 14 CFR part 39 to include an ADthat '.vould apply to all Boeing Model 757 airplanes, Thn\ supplemental NPRM 1NaspublishAd in the f"ederal Register on August 1. 2007 (72.FR 41963J, Thill supplemental NPRM proposed to require revising the Airworthiness Limitations [AWLs] section ofthe Instructions for ContInued Airworthiness (ICA) by incorporating

new limitations for fuel tank systems to sati~fy Special Federal Aviation Regulation No. 88 requirements. That supplemental NPRIvl also proposed to require the initial inspection ofcertain repetitive inspections sper.ified in the AWLs to phase-in thos!:!inspeclion~, and repair ifnece~sary. That supplemental NPRM also proposed to revise the original NPRM by aligning the compliance time forrevising the AWLs section with the compliance date ofthe special maintenance program requirement:;, updating the listing of applicable airplane maintenance manuals illAppendix 1, and clarifying certain actions,

Actions Since Supplemental NPRM Was Issued
Since we issued the supplemental NPRIvl, Boeing has issued Temporary Revision [TRJ09-008. dated March 2008. Boeing TR 09-008 is published as Section 9 ofthe Boeing 757 MaintenallCe Planning Document (MPD) Document, D622N001-9, Revision March 2008 [hereflfter referred to as "Revi,ion March 2008 ofthe M!'i)"), The supplemental NPRM referred to Revision March 2006 ofthe MPD as the appropriate source of :;orvice information [orilccompLishing the proposed actions. Revision Man:h 2008 ofthe MPD, among other aclir)lls. includes the following changes:

G Removes the repetitive task intervnl of 36,000 flight cycles from AWLs No. 28-AWL-0J, No. 28-AWL-03, and No. 28-AWL-14.

o Revi~es the ta~k description for AWL No. 2B-AWL-Ql to harmonize it with AWL No. 26-AWL-02 by removing references to certain station numburs.

o Revises AWL No, 28-A WL-03 to renect the new maximum loop resistance values associilted with the lightning pl'Otllction ofthe unpressurlzed fuel quantity indicatiog system [FQIS) wile bundle installations. Accordingly, we hilve revised paragraphs (fl, [g). and (h) ofthis AD to refer to Revision March 2008 ofthe MPD. We also have added anew paragraph (j) to this /\0 specifying that actions done before the effective date of this ADin accordance 1NithRlJvisions March 2006 thl'Ough November 2U07 of the MPD ilre acceptable for cOI!lpiiance with the corresponding re4uirements of paragraphs [g)and (hl ofthis AD. We also have removed reference to :J6,000 lolal flight cycles from Table 1 of this AD and revised the initial threshold for accomplishing AWLs No. 28-AWL01. No. 28-AWL-03, and No. 28-AWL14 to within 120 months since the date ofissuance ofthe original slandard airworthiness certificate or the dale of issuance ofthe origina.l flxport [:ertificate ofairwort!lina,s,

### Federal Register 

## IVol. 73, No. 90 !Thursday, May 

## B, 2008/RulGS and Regulations 25975

Operators should note that we have revised paragraph (g)ofthis AD to mquire illcorpl)rating Daly 1\WLs No, 28-AWL-Ol through No. 28-AWL-24 inclusive. AWL No. 28-AWL-25 was added in Revision October 2006 ofthe MPD, and AWL No. 28-AWL-26 was added in Revision January 2007 ofthe MPD, However, as an optiona.! ac.:tion, operators may incorporate those AWLs

as specified in paragrnph (g)ofthis AD, We have issued aseparate NPRM [Docket No, FAA-2007-28598) that, in part, propo~es to incorporate AWLs No. 28-AWL-20 and No, 2fl-AWL-26 into the 1\WLs section ofthe leA. That NPKM was publish8d in the Federal Register ouJuly 9. 2007 (72 PR 37UZ). We have illso issued AD 2008-05-03, amendment 39-15415 (73 FR 130fll, Man:h 12, 2008) tbil\, in part, requires revising theAWL~ ~ectioll ofthe lCA to incorporate AWLs No. 2(1-1\WL-23. No. 28-AWL-24. and No. 28-AWL-25. Therefore. we have added anew paragraph {kJto this AD specifying that incorporating AWLs No, 28-A WL-23, No, 28-AWL--24, and No, 28-A WL-25 in accordance with paragraph (g)ofthis AD terminates the a.ction required by paragraph (h)(Z) ofAD 200S-Q6-03.
Other Changes Marle toThis AD
We have reviseu paragraph (h) ofthis AD tDclarify iliat the actions identified in T<Jble1ofthis AD must be done at the compLiance time spec:ifisd in that table, Also, for standardization purposes. we have revised this r\D in the following ways:

Q We have addeda new paragraph (i)
to this AD to specify that no alternative inspections, inspection intervals, or critical design configuration control limitations (CDCCLs) lllay be used unless they are part of
~later approvl-Jd revision ofRevisioll March 2008 ofthe MPD, or unless they are appruved as an alternative method ofcompliance (AMOCj, Inclusion ofthis paragraph ill the AD is inteIld~d to ensure that the AD-mandated auwol'thiness limitations changes are treated the same a~the airworthiness limitations issued with the original type certificate.

• We have revi~ed Note 1 ofthIs AD
to clarify that an operator must request approval fo!'an AMOC ifthe operator cannot accomplish the proposed inspections because an airplane has been previously modified, altered. or r8paired in the areas addres~ed by the proposed inspections

.

• We have revised paragraph (h) of thi~ AD to specify that accomplishing the applicllble AWLs in Table 1 ofthis AD as part ofan FAA-approved maintenance program before the applicable compliance time constitutes compliance with the applicable requiremeIlts ofthat paragraph,

Q We have deleted Appendix 1 from this AD, since Revision March 2008 of the MPD aheady contains most ofthe updated information that is listed in Appendix 1 ofthe NPRM.
Cumrnell!s
We provided the public the opportunity to participate in the development ofthi~ AD, We have considered the comments received. Request To Extend lbc Task Intervals for Certain AWI. Inspections
KLM Royal Dutr.h Airlines, on behalf

orseveral operators, requests !lwt we review a45-pflge proposal to align certain airworthiness limitation item (ALl) intervals with the applicahle maintenance significant item (MS!) and enhanced zonal analysis procedure (EZAP) intervals for Moclel 737, 747, 757,757, and 777 airplanes, The recommendations in that proposal

ensure that the ALl intervals align with the maintenance schl1dules ofthe uperators, Among other changes, the proposal recommends extending certain AWL inspection intervals from 10 yearsl 35,000 flight cycles to 12 years for Model 757 ail'planes. We disagree \Nith KLM's request to extend certain AWL inspection intervals to 12 years. However, as stated previously. we have deleted the 36,000- total-night-cycle parameter from Table 1 ofthis AD to correspond with the task intervals specified in Revision March 2008 ofthe MPD. In developing an appwpriate compliance time for this

acuon. we considered the urgency Ilssociated with the subject unsafe condition and the practical aspect of accomplishing the required actions withil] aperiod oftime that corresponds 10the normal scheduled maintenance for most affected operators. HO\Never, according to the provisions ofparagraph (I)ofthis AD, we might approve requests to adjust the compliance time ifthe reqlwst includes data that prove that the new compliance lime would provide an acceptable level of~afsty. Request To Revise the Loop Resistance Values for AWL No. 2B-AWL-03 Boeing stEltesthat tbe loop resistance values for AWL No. 28-AWL--03 specified in Revision Marcb 2006 ofthe MFD are going to be revised, since those values are relevant for production airplanes. Boeing also states that the revised values will be more representative ofthe expected values for in·service airplallss. BoeIng points out th~t, ilccording to paragraph (h) ofthe supplemental NPRM, the revised values should be able to be used in accordance with alater revision ofthe MPD ifthe revision is approved by the Seattle Aircraft Certification Office [ACO), FAA We agree that operators may use the revis8d loop resistance value~ forAWL No, 28_AWL_03 in accordance witb Revision March 2008 ofth8 MPD. As stated previously, we have revised tbis AD accordingly. Request To Revise Note 1 !:loeingrequests that we revi~e Note 1 ofthe supplemental NPRM to clarify the need for an AMOC. Boeing states thilt the cunent wOlding is diffic.:ult to [ollow, and that the note is meant to inform opsrators th"t an AMOC to the required MPD AV,'Ls might be required ifan operator has previously modified. altered, or repaired the areas addressed by the lirnitatiom. Boeing requests that

we revise Note 1 as follows:

Q Add the \,vords "according to paragraph (g)" at the end ofthe first sentence.

o Replace the words "revision to" with "deviation from" in the last
sentence.

Q Delete the 'Nords "[g) or" and "as applicable" from the last seutence. hs stated prsviously. we have simplified the language in Note 1 ofthis AD for standardization willl other similar ADs. The language the commenter requests that we change does not appear in the revised note. Therefore, no additional change to this AD is necessary in this regard.
Condusion

We have carefully reviewed the available datil, including the comments received, and determined that air safety and the public interest require adopting the AD with the changes described previously. We>

have determined that these changes will neither increase the ecouomic burden un any operator nor increase the scope oftile AD.
Costs ofCompliance

There are about 990 a.irplanes ofthe affected design in the worldwide fle>el. The following table provides the estimated costs, Htan aVel'age labor rate of$80 per work hour. [or U.s. operator, to comply with this AD,

### 25976 Ff:deral Register/Vol. 73, No. 90IThursclay, May S, zoOS/Rules and Regulations

ESTIMATED COSTS

Work Cost per Number uf Action U,S.-registered Fleet cost hours airptane airplanes

AWLs revision 8 $640 639 $40a,960 Inspections S 640 639 408,960



## ---

Auth.ority for Th.is Rulemaking

Title 49 ofthe United States Code specifies the FAA's authority to issue rules on aviation s<'.fety.Subtille [, Section lOG, desc:ribes the authorit\' of the FAA Administrator. Subtitle Vii, Aviation Programs, descrihes in more detail the scope ofthe Agency's authority. We are issuing this rulemaking' under the authority described in Subtitle VII, Part A, Subpart Ill, Section 44701, "General requi rernents," Under that sectiun, Congress charges the FAA with promoting safe flight ofcivil aircraft in air commerce by presc:ribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce, This regldation is \.vithin the scope ofthCltC1uthority ber.ause it'addresses an unsafe condltion that is likely to exi~t Of develop on pl'Odur.ts identifilld ill this rulemaking action. Regulatory Findings

We have determined that this AD will
not have federalism implications under Executive Order 13132, This AD will
not have a substantial direct effect aD the States. on the relationship between the national government and the States.

or on the distribution ofpower and responsibilities among tho various level, ofgovernment. For the reasons discussed above, l certify that this AD; [1)Isnot a "slgniflcant regulatory action" under Executive Order 12866: [2)ls not iJ "significant rule" under DOT Regulatory Policies and Procedures (44 FR 11034, FElbruary 20, 1979); and (3) Will not have asignificant economic impact positive or negative,

on asubstantial !lumber of small entities under the criteria ofthe Regulatory Flexibility ,\ct. We prepared aregulatory evaluatiDn ofthe estimated custs to comply with this AD and placed it ill the AD docket. See the ADDRESSES

section for a location lo examine the regulatory evaluation.
List ofSllbjecls in 14CFRPart 39

Ail' transportation, Aircmft. Aviation safety, Inr.orporation by reference, Safety. Adolltion ofthe Amendment

III Accordingly, undlOrthe aulhority delegated to me by the Administrator. thE)FAA amonds 14 eFR part 39 as follows:

PART39-AIRWORTHINESS DIRECTIVES

1 The authority citation fm part 39 continues to read as follows: Authori!y: 49 U.S.c. lUG(g), 40113. 44701.
§39.13 [Amended]

IJl2.The Federal Aviation Administration [FAA) amends §39,13 by adding the following llew airworthiness directive (AD):

2008-10-11 Boeing: Amendment 38-15517. Docket No, FAA-2006-26710; Directorate Idenlifier ~006-NM-H7-AIJ.

EfTl!~tive Date
lal This AD becomes llffcctive June 12. 200B,

Affucted ADs (b) None. Applicability (c) This AD applies to aIll30eing Model 757-200. -ZOOPf, -200CB, alld -3UO series airplalles, ~ortificaled in any category, Note 1: This AD l"equir,>srevisioTIs to certain operator maintenan~e documents to indude new inspections. Compliance with th~se inspActions is required by 14 CFR 9] .403[c). For airplaJl~s that have been previously m[)dif1ed, altered, OrrBpaired in the areaS addre~sod by these inspActiom, the op"ratm may nat be abte to accompli,h the inspections described in the revisions. tn this situalioll, to comply with 14 CFR 91.403(c). tho operator mu,t request approval fOTan alternative method of~ompliance [AMDCI according to paragraph (I] ofthis AD, The requost should include a description or changes to the roquirarl inspe~(iolls t.hat will eusllro the ~onti[lued operationai ,afety of tha airplane.

Unsarll CondiLion (d) This ;\0 results [rum a dosign review of

## uw fuel tank Systems. We aro issuing thl, /\,Dto p]'eventth~ potential for ignition
,onrces inside f\lel tlUlks r.au.ed by latent faiJllre" alteration" repairs, ar maintenance aCliolls, which, in ~ombinatioll wiln tlamm"blB fuel vapors, could result in afuel tank explosion and wnsequenl loss ofthe ai]'pl~nr Compliance (e) You are respousiblll I"orbJvillg the actirlll, requirod by this AD p~rform~d within lhe compliance timlls specified, WIles, the actions hava already bBPn dOlle.

Service Information [f) The term "Revision March 200R ortllA MPD" as uSlld in lhis AD. m~ans BOlling Temporary Revision (TR) 09-,008, dated March 200B. Boeing TR 09-008 is published

os Section 9ofthe !:loeing 757 l\1a.inlellance Planning Document (MPD) Document. D62ZNO()1-9, Rovi8ion March Z008,

Revision ofAirwurthioess Limitations (AWLs) Section (g)Befare December 16. 2008. revise the AWLs oe~tion ofthe Instructions for Contilllled Airworthiness [leA] by incorpuratiug the i!lformalion ill the subsection, specified In par~graphs (g](l) through [g)(3) ofthi, AD into the MPD; eX~Bptthat the initlal inspections specified ill TRbie 1 of this AD must be done at the ~ompliancB limes specified in Table 1 A~complish.illg the revision in accordance with alawr {evision of lhll MPU is an at:ceptable method ufcompLiance iftbe revision is ~l-'proved by the Manager, Seattle l\.ircraft Cl'rtifiCotion Office (ACO). FAA, [1) Subsor;lion E, "AlRWORTHINESS L1Ml'l'ATIONS--FUEL SY~TEMS," of Revision MardI 21)08ofthe JI,1J'D. [2) Subsection F. "P!\GE FORMAl": SYSTEMS f\IRWORTHINESS LIMITATlONS:' of 1{evision Marcb 21)01:1 of thel"IPD, (3) Subsection G, "AIRWORTHINESS LIMITATIONS-FUEL SYSTEM AWLs," IIWL5 N'J, 28-A WL----(l]through No. 28- AWL-Z4 inclu,ive. ofRevisiofl March 2008 ofthe MPD. A5 an optional actioll. AWI..s No. 28-AWL-Z5I1lld No z8-!\WL-z6. as identified ill Subsection G ofRovision Mar~h 2008 ofthe MPD, also may be incorporated into the AWLs sectiorl ofthe leA. tJlitiallnspeclion, and Repair (h) Do thll impectiollS spedtled in Table 1 of this AD at the c'Jmplianr.e lime specil1ed in Table 1 Oflhis AD, and repair any discrepancy, in accordance with Suction G of Revision MHl'ch 2008 oftho MPD, The repalr
must be done beforll further flight. AccompIi5hiug the actiom in accordance wilh a latl'r revislon ofthe MPD is all acceptable molhod ofcompliance ifthe revision is approved by the Manager, Seattle ACO, Accompli~hi[lg thGinspections identified in Table 1 orthi> AD a, pllrt ofan FAi\·appnwed maint~nance progmm before the applicable cOl1lpliaJlG~time specified in Table 1 oftbis AD constitut~, compliance with the requirements of this paragraph.

### Federal Register /VoL 73, No. gO/Thursday, M[lY 8, 200B/Rules and Regulations

TABLE 1.-INITIAL INSPECTIONS 

### 25977

Compliance time
AWL No Description (whichever occurs later)

Threshotd Grace period

(1) 28-AWL-Ol A detailed inspection of external Within 120 months since the date Within 72 months after the effecwires over the center fuel tank 01 issuance ,I lhe original tive date ofthis AD. for damaged clamps, wire chaf· standard aifINorthiness cMifiing, arid wire bundles in contact cate or the dale of issuance of with the surface of the center the original export certificate of tueltank. airworthiness. (2) 28-AWL-Q3

.., A special detaiied inspectior"l 01 Withir"l120 months sir"lcethe date Within 24 mOllths afton the effecIho iightning shield fo ground 01 issuance 01 lhe original tive date ofthis AD. terminatioll cc <he out-of-tank standard airworthiness celtifi· fuel quantity indicating system cate or the date of issuance of
to verity functional integrity. the original export certificate 01 airworthiness, (3) 28-AWL-14. A special detailed inspection 01 Within 120 months since the date Within 60 months after the effec· Ihe fault current bond 01 lhe 01 issuance 01 <he original tive date ofthis AD, fueling shulotr valve acluator of standard airworthiness cMifi- <he center wing tank to verity cate or the date of issuance of electrical bond. the original export certificate of airworthiness.

Notr. 2: For the purpuses of this AD, a dp,tailed impe~lioll is; "An intensive examination ofa specific item, Lnstall[ltion.

or assembly to detect damage, failure, or irregular:ity. Available lighting is normally sllpplsmellted with a direct SOLlrceofgood lighting at an intensity deemed appropl'late, Inspe~tion ~ids such as mirror. magnifying lenses, et~

.. may b" nec;essary. Sllrfa~o cleaning ~lld e!alJOrate proeedurBS may be rpquired"

Note ;1;For the pw:puses Qfthis AD, a special detailed i1ispection is, "An intHll>ive examination ofa specific item, inst"Jlotioll,

or ",sembly to detect d~magjJ. failur~, or irregularity. The r;xamination is likelv to make extensive use ofspedalized inspection tr;~bniques and/or equiprneut. Intrical" de~ning und substantial access or disassembiy pHlcedlrre rnny be required."'

No Alternathce Inspections, tnspection Intervals, or Critical Design Configuration Control Limitations (GDGGLs) (i) After ",,,,omplishing the actions specified in pa,agraphs (g) and [h1orlh!s AD,

no a1t"mutive inspectiom, inspe~tion interval,. OrCDCCLs may be Llsedlmles" the inspections, intervals, DrCDCCLs ora port of

a laier revision of "R.evision March 2008 of the MPD" that is approved by the Manager, Suattle I\CO: or unless the inspections, intervals, or CDCCLs are approved as an AMOC in accordance with tho procedure, specified in paragraph (II ofthis AD.

Credit for Actions Done A~cording to Previous Revisions orthe MPD [jlActions doue before the effective date of lhi" AD in a~cordance with Sectioll9 ofthe Boeing 757 MPD Docwuenl. D622NOOl-9, Revision t,farch 2006; Revision October 2006; Revision jauuary Z007; or Revision Novemblll' 2U07; are acceptable fo1' compliJuce witl) the corresponding requirements ofparagraph, (g) and lh) ofth.is AD. Terminating Action for AD 2008-06-03, Amendment 311_1541$ (k) im:orporating AWLs No. 28-AWL-23, No. 28-A VVL~24.and No. 2a-A WL-25 into the AVIll.ssection ofthe ICA in accordance with pmagmph (g1Dfthis AD tcrminat~s Lhe action required by paragraph (b)[2) ofAD 2U08-06-0J. AILernati\'~ Methods ofComplianc~ (AMOCsl (!l[I) The M'mager, Seattle ACO. has the authority to approve AMOCs for this AD, if requested iu accordaul:~ wiLh tbe pra~edure~ found in 14 CFR 39.19. (2) To request adifferent mr;lhod of compliance or ~different compliance time for this AD. follow the procedures in 14 CFR 39.19, Before using any approved AMOC on any airplane to which LhBAMOC applies, notify your appropriate princip31 inspector (PI) in the FA!" Fiight Standards District Office [1'500), or lackLng aPI, yuur local FSDO,

Material In~orporated by Rererence (m) You must uSe Boeing Temporary Revision [TRI 09-0[)B, elated March 200A. to the Boeing 757 Maintenan~e Planning Document (MPD) Document. D622NOOI-9. to perfmm the actions that are required by this AD, unless the AD ,pecifies otherwise. Boeing TR U9-UlH:!i~ p\lhli~hed ~s Section 9 ofthe Boeing 757 Mainlenanc" Planning Document (MPD) Doculllelll, D622NOOl-9, Revision March 2008. (1)The Director ofthe Federal Registcr approved the incorporation hy refDrr;n~r; of this document in accordBnce with 5 U.S.c. 552[al and 1 eFR part 51. (2) Contact Boeing Commercial Ail'planes, P.O. Bax 3707, Seattle. Washingto1l98124- 2207, for 8copy ofthis service illforrnlltioll. (3) You may review copIes at the FAA, Tr~nsp[)rtl\irplaU(, Directorate, 1601 Lind Avenue SW

.. Renton, Washington; 01'at tbe Natioll3l Archives and R~cords Administration [NAR.'\.], For information on the ava.ilability Dfthis malmial at NARA, cali 202-741-6030, or go to, http:// lJ'wlV.an;1Jivf;!s.gov!

/edeml-regislerlefrlibrfocations.html,

Isslleu in Renton, Washington, 011Avril 29, 2008. All Bahrami, Manager, Tralisporf ilirpJane Directorate, l\ir(:r(l/t CorlifiC(ltion &'r1!jC"~, [FRDoc. E6-991 7Filed 5-7-06; 8;45 am]

SILLtNG CODE 491D-13-P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14CFR Part 39
[Docket No. FAA~2007-28385; Dlrector •.• te lden!lfier 2006-NM-181-AD; Amendment 39-15513; AD2008-1O-Q7]

RIN212o-AA64

Airworthiness Directives; Boeing Model 747-100, 747-1008, 747-1008 SUO, 747-2008, 747-200C, 747-200F, 747-300, 747SR, and 747SP Series Airplanes

AGENCY:Feder,,1 Aviation Administration [FAA). DOT.
ACTION: Final rnle.

SUMMARY:We are adopting a !lew airworthiness directive [AD) for all Boeing Model 747-1lJO, 747-1008, 747- 100B SUD, 747-20013, 747-200C, 747- 200F, 747-300, 747SR, and 747SP series Clirplanes. This AD reqllires revising the FAA-Clpproved mainteuanr.e program by incorporating new airworthiness Limitations [AWLs) for fuel tank systems
to satisfy Special federal Aviation Regulalion No. 88 requirements. This AD also requires the initial inspectiOll of