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Federal Aviation Administration [4910-13-PI C("o~,'~ClJ~"'~>:~~'Ci~" 

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certain publication listed inthe AD as of [inse-rt date 35 days after date of publication in FEDERAL REGISTER]. The Director of the Federal Register approved the incorporation by reference of' I\OIITING,n,we fuselage skin panels at the chem-milled steps, which could result in sudden fracture and oxygel1ll1asks. We are issuing this AD to detect and correct fatigue cracking ofthe

DATES: This AD is effective [insert date 35 days after date of publication in the RIN 2120-AA64

an alternate airport due to cabin depressrnization and subsequent deployment of the ACTION: Final rule. lJ·"'r, Airworthiness Directives; The Boeing Company Model 737-300, -400, and -500 Series 

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# /"1/01' Airplanes AGENCY: Federal Aviation Administration (FAA), DOT.

stringer S-l and 8-2 left, between STA 827 and STA 847 on an airplane that diverted to

faihHe of tile fuselage skin panels, and consequent rapid decompression oftlle airplane. SU.NlM.ARY: We are adopting a new airworthiness directive (AD) for certain Boeing

the FEDER".L REGISTER]. 1~1'11",,,;,SI" Model 737-300, -400, and -500 series airplanes. This AD requires repetitive external non 

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## 61 destructive inspections to detect cracks in the fuselage skin along the chem-mill step at ~ 

## i(/l( G'! stringers 8-1 and 3-2 right, between station (STA) 827 and STA 847, and repair if

_ 100 necessary. This AD results from areport of a hole in the fuselage skin common to14910-I3-P)

DEPARTMENT OF TRANSPORT AnON Federal Aviation Administration 14eFR Part 39 :ONC\l~I(£-NC~ OVTII<G sYM6O\.

INI1IALSISIG (Docket No. FAA-2009-0788j Directorate Idcnti1ier 2009-NM-193-AD; Amendment (;.::\"+'1,(\'1)(1 -ATE 39_H.,AD H] !l-i'2-1."j OUllJiGSTMBOI RIN 2120-AA64 fr'l.;ICrlZ1.f.-: ... 

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DATES: Tbis AD iseffective [insert date 35 days after date ofpublication inthe FEDERAL REGISTER]. The Director ofthe Federal Register approved the incorporation by reference of certain publication listed inthe AD as of [insert date 35 days after date ofpublication in the FEDERAL REGISTER]. \\\:l".., -\

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DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14CFR Part 39 [Docket No. FAA-2009-0788; Directorate Identifier 2009-NM-193-AD; Amendment 39·'*' AD*'J
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## , RIN 2120·AA64 Ainvorthiness Directives; The Boeing Company Model 737-300, -400, and -500 Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. ::oNCUJlIl.EI'lCE.S OtfT]NG sYMIlOI. 

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## I. , SUMMARY: We are adopting anew airworthiness directive (AD) for certain The

" oG Boeing Company Model 737-300, -400, and -500 series airplanes. This AD requITes s_ ~L.'"t7~ ~"i"'_\ <.--'" repetitive external non-destructive inspections todetect cracks in the fuselage skin along NITIAl.SISIG the chern-mill step at stringers S-] and S-2right, between station (STA) 827 and STA 

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UfIW.SJSIG fuselage skin panels at the chem·milled steps, which could result in sudden fracture and 847, andrepair ifnecessary. This AD results from areport ofahole inthe fuselage skin '-, lc.- (J



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failure ofthe fuselage skin panels, and consequent rapid decompression ofthe airplane. DATES: This AD is etfective [insert date 35 days after date ofpublication inthe OUTING S'l'MBO\ FEDERAL REGISTER]. UlllAlS/SlG The Director ofthe Federal Register approved the incorporation by reference of certain publication listed inthe AD asof [insert date 35 days after date ofpublication in the FEDERAL REGISTER]. UI11ALSfSIG