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Maintenance Planning document. The revision includes updated inspection requirements 

### N' DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14eFR Part 39 

## 2011-622.5 IDocketNo. FAA~~-++++; Directorate Identifier 2010-NM-208-ADI RJN 2120-AA64 Airworthiness Directivesj The Boeing Company Model 777 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (J\TPRM). SUI\'lMARY: We propose to adopt anew airworthiness directive (AD) for the products listed above. This proposed AD would require revising the maintenance program by incorporating subsection B, "Airworlhiness Limitations~ Stll.lctnral Inspections," orthe 

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## E ,e to detect fatigue cracking ofprincipal structural elements (PSEs). This proposed AD would specify !.heinitial perfonnance ofcertain repetitive inspections specified in the AWLs to phase in those inspections. This proposed AD was prompted by anew revision tothe AWLs. We are proposing lhis AD to ensure that fatigue cracking ofvarious PSEs is detected and corrected; such fatigue cracking could adversely affect the structural integrity ofthese airplanes. DATES: We must receive comments on this proposed AD by [fNSERT DATE 45 DAYS AFTER DATE OF PUBLICATION INTHE Federal Register]. ADDRESSES: You may send comments by any ofthe following methods:
• Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions forsubmitting conunents.
• Fax: 202~49J-2251. 

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•Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow Lhe instructions forsubmitting comments . • Fax: 202-493-2251. DATES: We must receive comments on this proposed AD by [INSERT DATE 4S ADDRESSES: You may send comments by any ofthe following meLhods: DAYS AFTER DATE OF PUBLICATION INTHE Federal Registerl AWls to phase in those inspections. This proposed AD was prompted by anew revision to the AWLs. We are proposing this AD to ensure that fatigue cracking ofvarious PSEs is detected and corrected; such fatigue cracking could adversely affect the structural 

### incorporating subsection B, «Airworthiness Limitations - Structural Inspections;' orthe Maintenance Planning document. The revision includes updated inspection requirements INI' J to delect fatigue cracking ofprincipal structural elements (PSEs). This proposed AD ~ would specify the initial performance ofcenain repetitive inspections specified in the jDocket No. FAA-20ww

### -++++; Directorate Identifier 201G-NM-208-AD]


### AGENCY: Federal Aviation Administration (FAA),DOT. ACTION: Notice ofproposed rulemaking (NPRM). Airn'orthiness Directives; The Boeing Company Model 777 Airplanes
SUMMARY: We propose to adopt anew airworthiness directive (AD) for the products listed above. This proposed AD would require revising the maintenance program by RIN 2.12Q-AA64 

### Federal Aviation Administration DEPARTMENT OF TRANSPORTATION 14CFR Part 39