14 CFR Part 39

[4910-13-P]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

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[Docket No. FAA-20IO-++++; Directorate Identifier 2009-NM-223-AD]

RlN 2120-AA64

AilWorthiness Directives; The Boeing Company Model 727, 727C, 727-100, 727-100C

727-200, and 727-200F Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

SlJMl\IlARY: We propose to adopt a new airworthiness directive (AD) for all Model

727, 727C, 727-100, 727-100C, 727-200, and 727-200F series airplanes. This proposed

AD would require repetitive detailed inspections of the aft pressure bulkhead web for

cracking, and repair if necessary. For certain airplanes, this proposed AD also would

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provide for an optional preventative modification of the aft pressure bulkhead web, whic

would terminate certain repetitive detailed inspections. This proposed AD results from

reports of cracks in the aft pressure bulkhead web. We are proposing this AD to detect

and correct cracking in the aft pressure hUlkbea~ web, which could adversely affect the

structural integrity of the airplane, resulting in difficulty maintaining cabin pressurizatio

or rapid decompression of the airplane.

DATES: We must receive comments on this proposed AD by [INSERT DATE 45

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

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(4910-13-P)

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration -O"CVRRE'KES

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14 CFR Part 39

(Docket No. FAA-2010-++++; Directorate Idel'tifier 2009-NM-223-AD)

RIN 2120-AA64

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AGENCY: Federal Aviation Administration (FAA), DOT.

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ACTION: Notice of proposed rulemaking (NPR.1\1). ROVTTNG'5YM60L

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SUMMARY: We propose t.oadopt a new airwOrhiness directive (AD) for all Model 'lAL;'S!;

727, 727C, 727-100, 727-10nC, 727-200, and 727-200F series airplanes. This proposed DATE ," "-"\

I b 10 10 AD would require repetitive detailed inspections of the aft pressure bulkhead web for outin~5.{mbo'

crack·mg, and repau.. 1

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h·IS propose dAD a1so wou Id l"mAlS/SIG5fA-fiEb

provide for an optional preventative modification of the aft pressure bulkhead web, whic

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would terminate certain repetitive detailed inspeftions. This proposed AD results fTom

reports of cracks in the aft pressure bulkhead we~. We are proposing this AD to detect

and correct cracking in the aft pressure bulkhea1 web, which could adversely affect the

structural integrity of the aiJplane. resulting in dift,iculty maintaining cabin pressurizatio

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Ainvorthiness Directivesj The Boeing CornpaI!YModel 727, 727C, 727-100, 727_100CRollm,e,;SYM50l

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727-200, and 727-200F Series Airplanes INlTIAlSISIG

or rapid decompression of the airplane.

DATES: We must receive comments on this proposed AD by [INSERT DATE 45

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DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

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[4910-13-P]

DEPARTMENT OF TRANSPORT AT10N

Federal Aviation Administration

14 CFR Part 39

(Docket No. FAA-10lO-++++; Directorate Identifier 2009-NM-223-AD]

RlN 2120-AA64

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM). oonNG'SYMBOl

OVTIGSYMBOIAD would require repetitive detailed inspections of the aft pressure bulkhead web for

cracking, and repair if necessary. For certain airplanes, this proposed AD also would

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Model INJ'l"LSlS1G

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727, 727C, 727-100, 727-J()OC, 727-200, and 727-200F series airplanes. This proposed';";' ... .~

would terminate certain repetitive detailed inspections. This proposed AD results from

provide for an optional preventative modification of the aft pressure bulkhead web, whic

reports of cracks in the aft pressure bulkhead web. We arc proposing this AD to detect

and correct cracking in the aft pressure bulkhead web, which could adversely affect the

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structural integrity of the airplane, resulting in difficulty maintaining cabin pressurizatio

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or rapid decompression of the airplane.

DATES: We must receive comments on this proposed AD by [INSERT DATE 45

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

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