### DEPARTMENT OF TRANSPORTATION 149JO-13-P] CO~CU"~(~CE~

### WI14CFR Part 39 Federal Aviation Administration



# D02>3 [Docket No. FAA-2011~++++; Directorate Identifier 2010-NM-019-ADj RIN 2120-AA64 Airworthiness Directives; The Boeing Company Model 777~200 Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). SUMMARY: We propose to adopt anew airworthiness directive (AD) for certain Mo 777-200 series airplanes. This proposed AD would require installing anew circuit breaker, relays, and wiring to allow the tlightcrew totum offelectrical power to the in~ flight entertaimnent (IFE) systems and other non-essential electrical systems through a switch inthe flight compartment, and doing other specified actions. The actions inelud liVId



### replacing the cabin area control panels; changing the wiring; modifying the purser stati n
ortheA-4 galley, as applicable; installing new cabin system management unit, cabin a ea
ROlff'~GSn'&Ol 

### control panel, overhead electronics unit, and zone management units operational software, asapplicable; and making achange tothe cabin services system (eSS) 

### configuration database and installing thenew database inthe CSS components. This

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### proposed AD would also require changing the wiring atthe cabin management system n thepurser station. This proposed AD results [Tomin~fligbtentertairunent (IFE) system review. We areproposing this AD to ensure that the flightcrew is able toturn off electrical power to the IFE system and other nln-essential electrical systems through a switch inthe flight compartment inthe event Jsmoke or flames. The flightcrew"s inability to tum offelectrical power to the IFEIsystemand other non-essential c1ectTiea systems inthe event of smoke orflames could ~esu1tinthe inability to control smoke or OA1E

FAAForm 1360·14.1 (6.89) OFFICIAL FilE 

## cdpy of< us GpVERNMENT PRINTING OFFICE: '995
- 769-2'1[4910-IJ-PI DEPART~mNT OF TRANSPORTATlON Federal AviatiOlL Administration ""CU~""t<~.5 oun...:; """'Ol
(Docket No. FAA-2010-++++; Directorate Identifier 201o-NM-019~ADI RIN 2120-AA64 14CFR Part 39

Airworthiness Directives; The Boeing Company ModeJ 777-200 Series Airplanes AGENCY: Federal Aviation Admini"mtion (FtA), DOT. ACTION: Notice of proposed Tulemaking (NPjI\1? S·UMMARV: We propose to adopt anew airworhiness directive (AD) for certain Mode 777-200 series airplanes. Th.isproposed AD woJld require installing anew circuit breake" rclays, and wiring toallow tbe Oigbtcr+ totum off electrical powe, to the innight entertaimnen! (lFE) systems and other non-essential electrical systqTlS through a switch in the flight compartment, and doing

# amir specified actions, The actions indud replacing the cabin area control panels; changin~ the wiring; modifying the purser statIO
orthe A-4 galley, as applicable; instalhngncw dabin system management unit, cabin an;' wntml panel, overhead eleetmnies unit, :md

# Z01" management units operational software, as,applicable; and making achange toIthecabin services system (CSS) configuration database and installing the new database in the CSS components. This QU",m:;'MWJl pmposed AD would also ,equire changing the '1iring atthe cabin m:magement system ~ 

# .tlli!i~
the purser station. This proposed AD results from in-flight ent'ertainment (IFF.) systems Me I 

## l'th4/'" review. We are pmposing this AD toensure th<rtthe f1ightcrew is able to tum off I 'o.mNGS"_"- electrical power to the lFE system and other nod-essential electrical systems through a I "nl~L~5'(; switch inthe flight complliimcnt inthe event ofsmrike or flllines. The tlightcrew's inability to tum off electrical power to the IFE sr,! stem and other non-essential electrical )~r( OlmttQ 5''"'l'iOl systems-in the event of smoke or flames could r suIt in the .inability to control smoke or