14910-13-Pj

Ain,,'orthiness Directives; Boeing Model 731-600, -700, 

### -70De, -800, and -900 Series 

### 121

ordoubler atcertain approved repair doublers, and the skin atdecal locations; and Tel at d RlN 2120-AA64 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. Federal A\'iatioD Administration

SUMMARY: We arc adopting anew airworthiness directive (AD) forcertain Model ~--{OO 

# .~ 737-600, -700, -70De, -800, and -900 series airplanes. This AD requires inspections for ~lVo [Docket No. FAA-2009-0913j Directorate Identifier 2009-NM-IOI-AD; Amcndme 

## 105'15 fJ..(P-010 39-**; AD 2010-**-**) DEPARTMENT OF TRANSPORTATION 14CFR ParI 39

NllIN='U investigative and corrective actions ifnecessany. This AD results from reports ofscribe line damage found adjacent to the skin lapjoints, decals, and wing-ta-body fairings. W are issuing this AD to detect and correct scribe lines, which can develop into fatigue ROI!TI~O,YMaol cracks inthe skin. Undetected fatigue cracks

# dan grow and cause sudden decompressiol Nl1'1AI.siSll' ofthe airplane. JATE DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION INTHE FEDERAL REGISTER]. OlTlINGSnf\l()~
~TrIAI.s-sJG The Director ofthe Federal Register approved the incorporation by reference 0 ~'t certain publication listed intheAD asof [INSERT DATE 35 DAYS AFTER DATE 0 PUBLICATION INTHE FEDERAL REGISTER]. NII1AI.SiSIG ADDRESSES: For service information identified inthis AD, contact Boeing Commercial Airplanes, Attention: Data &Services Management, P. O. Box 3707, Me14910-13-P) DEPARTMENT OF TRANSPORTATION Federal A"iation Administration 14 CFR Part 39 (Docket No. FAA-2009-09l3; Directorate Identifier 2009-NM-10l-AD; Amendmen f1I,)01-II~

## 1f1z.. 'lmAI.SISIG 

# AZaa=1 39-**; AD 2010-**-**) RlN 2120-AA64 I Ainvorthincss Directives; Boeing Model 737-600, -700, R70De, -800, and -900 Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. OV11NG SY1160~ "A)M'I~D5 IN ALS)SlG ." /D L.e-r1"£ 1iI"-
~~ 

# r.N/'a> 10

investigative and corrective actions ifnecessary. This AD results from reports of scribe

~~ oc

" line damage found adjacent to the skin lapjoints, decals, and wing-la-body fairings. We c-' -~' It<lT1AlSISIG 737-600, -700, -lODe, -800, and -900 series airplanes. This AD requires inspections for scribe lines in the fuselage skin at lapjoints, the splice strap at certain bun joints, the ski or doubler at certain approved repair doublers, and the skin at decal locations; and relate ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Model

are issuing this AD to detect and concel scribe lines, which can develop into fatigue cracks in the skin. Undetected fatigue cracks can grow and cause sudden decompression (" \~ 

## l'='

• ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P. O. Box 3707, 

### Me PUBLICATION IN THE FEDERAL REGISTER]. certain publication listed in the AD as of [INSERT DATE 35 DAYS AFTER DATE OF , The Director of the Federal Register approved the incorporation byreference of DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION [N THE FEDERAL REGISTER]. of the airplane.

DATE[491O-13-P]

DEPARTMENT OF TRANSPORTATION Federal AviationAdministration 14CFR Part 39 

### flf0n)-I\~

## if'l"Z.- JNlTlAL$/5IG (Docket No. FAA-2009-0913; Directorate Identifier 2009-NM-IOI-ADj Amendment 

## P,.2c..L\.-.c;..;'j 39-**; AD 2010-**-**) 'n 

## 5 -,:>"'-1\) OlfTlNG sYHIlOL

iNJnALS{SIG

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### Id>- 

### I Airworthiness Directives; Boeing Model 737-600, -700, -70De, -800, and -900 Series I Airplanes RIN 2120-AA64

AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. 737-600, -700, -70De, -800, and -900 series aiIplanes. This AD requires inspections for SUMMARY: Weare adopting anew airworthiness directive (AD) forcertain Model 

# ~,- r sCribelines inthe fuselage skin atlapjoints, the splice strap atcertam buttJoints, the ski ,~~~;;~-

## ~'a ~> ordoubler atcertain approved repair doublers, Jd the skin atdecal locations, and relate .: ",'~ l 

## I investigative and corrective actions ifnecessary. This AD results from reports ofscribe line damage found adjacent to the skin lapjoints, decals, and \ving-to-body fairings. We ~' -l" NmAlS,IS1G areissuing this AD to detect and correct scribe lines, which can develop into fatigue cracks inthe skin. Undetected fatigue cracks can grow and cause sudden decompression f.., ,~ \ 0 ofthe airplane. 

# :stn -IliJ. NIt1AlSfS1G 

# /:;f-Y m 

# t-/n/;. 'IGSYH60l The Director ofthe Federal Register approved the incorporation byreference of "1-u{l)

An:

NlT1ALSJSIG OUTINGsn'BOl mn.>L51S1G certain publication listed intheAD as of [INSERT DATE 35 DAYS AFTER DATE OF 

# I ' PUBLICATION INTHE FEDERAL REGISTERJ]. I ADDRESSES: For service information identified inthis AD, contact Boeing Commercial Airplanes, Attention: Data &Services Management, P. O. Box 3707, 

## Me