(4910-13-P]

DEPARTMENT OF TRAi'lSPORTATION

Federal Aviation Administration

14 CFR Part 39

(Docket No. FAA-2Q10-0674; Directorate ldentifier 2010-NM-012-AD;

IIPS 'tIo

Amendment 39-**; AD 2010-**-**]

).10-01

RIN 2l20-AA64 '

Airworthiness Directives; The Boeing Company Model 747 Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final mle.

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SUMMARY: We arc adopting a new ainvorthiness directive (AD) for the products list

above. This AD requires repetitive inspections for cracking in the body skin around the

aft comers of the nose wheel well; for certain airplanes, repetitive inspections for

cracking in the skjn splice plate at the aft comers of the nose wheel well; and related

investigative and corrective actions ifnecessarJ. This AD also requires repetitive post~

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modificationlDspections for cracking in the body skin and the skin splice plate; for

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certain airplanes, an mspection for steel cross-shaped doublers on the larger aluminum

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doublers; and corrective action if necessary. Thfs AD also requires repetitive surface hi lTlAI",,;«"

frequency eddy current (HFEC) inspections of a certain bulkhead outer chord, skin spli 'IE

plate, and outer cbord radius filler for craCking;lrepetitive detailed inspections for

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cracking of the bulkhead frame web and body skin; and corrective actions if necessary. 'NITLoJ...SI;K'

This AD provides for optional terminating actiJn for certain repetitive inspections. This DATE

AD was prompted by reports of cracking of thelfnselage skin and adjacent internal skin ",c""m,oo.

splice plate at the left and right nose wheel well aft comers, and the outer chord of the 'MrlA'""ISl(.;

body station (BS) 400 bulkhead. We are issuing this AD to detect and correct cracking ATE

the fuselage skin or splice plate, which, togethJ with cracking of the bulkhead outer
14910-13-PI

modification inspections for cracking in the bod~ skin and the skin splice plate; for

certain airplanes, an inspection for steel cross-shaped doublers on the larger aluminum

doublers: flnd corrective action if necessary. ThiJ AD also requires repetitive surface hi '11

frequency eddy current (HFEC) inspections of a Lrtain bulkhead outer chord, skin spl

platc. and outer chord radius filler for cracking; iepetitive detailed inspections for

crackmg of the bulkhead frame web and body skin; and corrective actions if necessary j~/2.../ 16

This AD provides for optional tcrminat1l1g actioj for eertall~ repetltlve inspectIons Tl:l ,~:,:=:~a()c

AD was prompted by reports of crackmg of the uselagc Skill and adjacent Internal Skll

splice plate at the Ic-ft and right nose wheel well aft corners, and the outer chord of the ~n:

body station (BS) 400 bulkhead. We are issuing ~hiSAD to detect and correct crackin~ Cif"""""'-""

DEPARTMENT OF TRANSPORTA nON

RlN 2120·AA64

Airworthiness Dire.ctives; The Boeing Compan~ Model 747 Airplanes

AGENCY: r~ederal Aviation Adm.inistration (F1JAJ, DOT. ~I;; $r OOL

ACTION, Final cu1e. AAlm -jt/J5 fif

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SUMMARY: We are adopting a new airworthiness directive (AD) for the products list .,..~~S "

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above. This AD requires repetitive inspections for cracking in the body skin around the l' ~

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a t corners 0 t e nose W lee we ; or certaln all anes, repetitIve InspC,CllOns lor

crocking in the skin splice plate at the all cornerslofthe nose •..vheel well; a.nd related

investigative and corrective actions if necessary. This AD also requires repetitive poStFederal Aviation Administration

14 eFR Part 39 I

(Docket No. FAA-20JO-0674; Directorate Iden1ifier 2010-NM-012-AD;

Amendment 39-**; AD 2010-**-HI

lhe fuselage skin or splice plate, which, together with cracking of the bulkhead outer
[4910-13-PJ

DEPARTMENT OF TRANSPORT AnON

modification inspections for cracking in the body skin and the skin splice plate; for

certain airplam:s, an inspection for steel cross~s~aped doublers on the larger aluminum

d bl d ' "f 'J'II AD I ' , , 'I ' '1" I

au ers; an correctIve actlOn I necessary. l1F a so reqUIres rcpetmve surface ll) 1 \~All.:?

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frequency eddy current (HFEC) inspections of a certain bulkhead outer chord, ski.n spl e

aft comers oflhe nose wheel well; for certain aitlane;;, repetitive inspections for

cracking in the skin splice plate at the aft corners ofthc nose wheel well; and related

investigative and corrective actions if necessary. This AD also requires repetitive- post-

[Docket No. FAA-20.10-0674; Directorate Identi.fier 2010-NM-012-AD;

Federal Aviation Administration

14 CFR Part 39

Amendment 39-**; AD lOlO-*"'-**}

RIN 2120-AA64

Aim"orthincss Directi\'Csj The 130cing Compa~yModel 747 Airplanes

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ACENCY: Federal Aviation Administration (FAAI ), DOT.

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ACTION, Final rule, 4Ailrd1.1J5 fJ1

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SUMl\'1ARY: We arc adopting a new airwonhiness directive (AD) for the products list I'Los

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above. This AD requires repetitive inspections for cracking in the body skin around the .-1

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plate, and outer chord radius filler for cracking; repetitive detailed inspections for

cracking ortlle bulkhead frame web and body skin; and corrective actions if necessary "

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This AD provides for optional terminating actiJn

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for certain repetitive i.nspections. Tbi _

AD was prompted by reports of c.raeking of the fuselage skin and adjacent internal skil ""'LA\.>ISI<::

splice plate at the left and right nose wheel well an comers, and the outer ehord ofthe . 'l

body station (BS) 400 bulkhead. We arc issuin~ this AD IQ delecl and correct crackin~ 8r'~",",,-:>o.

Lheluselage skin 0' splice plate, which, togethl with cracking of the bulkhead outer
14910-I3-P]

DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration _'JNCU""""';{5

OU""G~'''''rn

14eFR Part 39

IDocket No. FAA-2010-0674j Directorate Ide1tifier 2010-NM-0I2~AD;

Amendment 39-**; AD 2010-**-**1

RIN 2120-AA64 I

Ain-.'orthiness Directives; The Boeing Company Model 747 Airplaues

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: final rule. I

SUMMARY: We are adopting a new airworthiness directive (AD) for the products lisL

I

above. This AD requires repetitive inspections fFr cracking in the body skin around the

aft comers of the nose wheel \".-ell; for certain airplanes, repetitive inspections for

crackin.g In the skin splice plate at the aft comer orthe nose wheel well; and related

investigative and corrective actions if necessary. This AD also requires repetitive postmodification inspections for cracking in the bOI

skin Y and the skin splice plate; for

certain airplanes, an inspection for steel cross-shaped doublers on the larger aluminum

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doublers; and corrective action if necessary_ This AD also requires repetitive surface hi '

frequency eddy current (HFEC) inspections of lcertain bulkhead outer chord, skin spli :'~

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plate, and outer chord radius filler for cracking; repetitive detailed inspections for

,,"eking ofthe bulkhead [mmc web and bopy lk;n; and cOiTecl;ve aelions ;fnecessary

This AD provides for optional terminating action for certain repetitive inspections. Th"

AD was prompted by reports of cracking Oflhi fuselage skin and adjacent Internal ski

splic.e plate at the left and right nose wheel well aft comers, and the outer chord of tile

body station (BS) 400 bulkhead. We are issuiJg this AD to detect and correct crackin I OI!Tl"G 5'"Mt>Ql

the fuselage skin or splice plate, which, together with cracking of the bulkhead outer
14910-13-PJ

DEPARTMENT OF TRANSPORTATION

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doublers: and corrective action ifnece-ssary. This AD ~llso requires repetitive surface hi r ~

frequency eddy current (HFEC) inspections aria certain bulkhead outer chord. skin spli " l· 1~~[V

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abovc-. This AD requires repetitive inspections for cracking in the body skin around the

Federal AviatioD Administration

1l10dilic(llion inspections for cr(lcking in lhe body skill and the skin sphcc plate; for

certain airplanes. an inspection for steel eross-JhapCd doublers on the larger aluminum

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule. I

investigative and corrective actions lfnecessary. This AD also requires repetitive postRIN 2J20-.:\A64 . I

Airworthiness Directives; The Boeing Company Model 747 Airplanes

an comers of the nose wheel well; for cenain airplanes, repclitive inspections for

crack1ng in the skin splice plate at the aft cornej·s of the nose wheel well; and related

SUl\1MARY: We arc adopting a new airworthiness direelivc (AD) for the products list

IDockl~f No. FAA-ZOIO-0614; Directorate ldc'rtifier 2010-NM-012-AD;

Amendment 39-**; AD 2010-H-**1

1-*eFR Part 39

plate, and outer chord radius filler for cr~lckinl; repetitive detailed inspections for IJJf!:,t -at:)

cracking of the bulkhead fr<lmcweb and bopy skin; and corrccllve aclions if necessary

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This AD provides for optional tcnninating action for cenain rcpeliti\"e inspections. Thi' I "","'Hr. """')1

1\0 was proll1pted by reports of cracking of t11cfuselage skin and adjacent intcma! skil

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splice plate at the lefl: and right nose wheel \•...ell an comers, and the outer chord of the

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body station (8S) 400 bulkh.cad. We are iSfiuirg this AD to detect and correct c.rackill~ ,~"'.:;~""'"

the fuselage skin or splice plate, which, together with cracking of the bulkhead outer