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### DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14CFR Part 39 (Docket No. FAA-20] 0-0646; Directorate 

### Identifier 2009-NM-223-AD;

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### Amendment39~ AD2e18-lS •••• _il'K) 

### RIN 2.120-AA64 Airworthiness Directivesj The Boeing Company Model 727, 727C, 727-100, 727-100 727-200, and 727-200F Series Airplanes 

### AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Finalrule. SUMMARY: We are adopting a new airwOlthiness directive (AD) for the products list 

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### above. This AD requires repetitive detailed inspections ofthe aft pressure bulkhead we 

# D~~1111 0 for cracking, and repair ifnecessary. For certain airplanes, this AD also provides for an optional preventative modification ofthe aftpressure bulkhead web, which would terminate certain repetitive detailed inspections. This AD was prompted by reports of cracks inthe aftpressure bulkhead web. We are issuing this AD to detect and correct cracking inthe aftpressure bulkbead web, which could adversely affect the structural .OunNG S\'MOOL

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### integrity ofthe airplane, resulting indifficulty maintaining cabin pressurization orrapid OATE 

### decompression ofthe airplane. DATES: This AD iseffective [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. ROUnNG '''''OOL

DATE 

### The Director ofthe Federal Register approved the incorporation by 

### reference of OunNGmlBoL 

### certain publication listed inthe AD as of [INSERT DATE 35 DAYS AFTER DATE 0 

# I PUBLICATION IN THE FEDERAL REGISTER]. INITIM">,'S'"[4910-I3-PI DEPARTM.ENT OF TRANSPORTA nON Federal AYiation Administ.ration 14CFR Part 39 

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.011""';"'-""'" RIN 2120-AA64 Airworthiness Directives; The Boeing Company Model 727, 727C, 727-100, 727-100 727-200. and 727-200F Series Airplanes ACENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule.

optional preventative modification ofthe aft pressure bulkhead web, which would IDoC'.ketNo. FAA-ZOIO-0646; Directorate Identifier 2009-NM-223-AD; Amendment 39-**; AD 2010~**·**1



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. . . 111,,0 SUMMARY: We are adopting a new amvorl,hress dIrective (AD) forthe products list """0 ;,,_ above. This AD requires repetitive detailed inspections of the aft pressure bulkhead web 

## )z, J' l"m••••. S!"G for cracking, and repair ifnecessary. For certain airplanes, this AD also provides for an

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terminate certam repetitive detailed inspections. This AD was prompted by reports of cracks in the aft pressure bulkhead web. We are

# lissuing this AD to detect and correct cracking inthe

# an pressure bulkhead web, WhiCt}could adversely affect the structural mtegrilY of the airplane, resulting in difficulty maintaining cabin prcssurizaLion or rapid 

### Ii decompression of the airplane. DATES: This AD is effective [INSERT DATE 35 DA

### YS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. 

### I"''',",-=JG The Director oftile Federal Register ap~rovcd the incorporation byreference of

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__ certain publication listed in the AD as of[fNSERT DATE 35 DAYS AFTER DATE

# a PUBLICATION IN THE FEDERAL REGISTER]. 

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----[4910-13-PI DEPARTMENT OF TR-\NSPOR1ATION Fcdcral.-\\'iatioll Administr;ltion 14eFR I-':U"'39 j[)ockel No. FAA-2010-0646; Directorate Idcntil1CI' 2009-Ni\'1~223-AD; Amendment 39-**; AD 2010-**-**1 RIN 2120-AA64 Ail-worthiness Dirccth'cs; The Boeing Company Model 727, 727C, 727·) 00. 727-100 727-200, and 727-200F Series Airplanes ACENCY: Federal AViation Administration (FAA). DOT. ACfION: FioHI rule. ::<>'·(~~"t··~(~ "'"~",~~ S"'l!<II

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SUMMARY; V

•... e arc adopting it new ain\'onhlness directive (AD) for the products lisl /I

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## .•." above. This AD requires repetitive detailed inspections of the aft pressure bulkhead web

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fot crackinl;. and repair ifnt~ccssary. Forcertain airplanes, this AD also provides for an

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_. Mlf optional preventative modification ofthe aft pressure bulkhead web, which would )} 

# eI 0\."[1""S""",,,, lcmlinate certain repetitive det::lilcdinspections. This AD was prompted by reports of cracks In the an pressure bulkhead web. We :Irc issning this AD to detect and correct crackitlg in the an pressure bulk.hc8d web, which cOlildadversely affect lhe structural 

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## lH I,,-{O integrity of the airplane. resulting in difticlllty maintaining c<lbinpressurization or raplu 

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# to> '.I""'-"'~~. decompression of the airplane. DATES: -nlis AD is cffecti\'c [INSERT DATE 35 DAYS AFrER DATE OF


### "''''''''''','''''''' PUBLICATION IN THE FEDERAL KEGISTER]. ""'J."">"~ The Director ol'lhe peder"l Register approved tlie incorporation hy rclcrcnce or I ""t cerl3in publiciltion listed ill the AD as of [INSERT DATE 35 DAYS AFTER DATE 0' PUBLICATION rN THE FEDERAL REGISTER].