Airworthiness Directive · Amendment 39-17935 · Electrical power
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 777-200 series airplanes, certificated in any category, as identified in Boeing Service Bulletin 777-24-0077, Revision 4, dated October 17, 2012.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200 series airplanes. This AD was prompted by reports of smoke or flames in the passenger cabin of various transport category airplanes related to the wiring for the passenger cabin in-flight entertainment (IFE) system, cabin lighting, and passenger seats. This AD requires, for certain airplanes, doing an inspection of the electrical power control panel for a certain part number, and corrective action if necessary; and, for certain other airplanes, installing a new electrical power control panel, and making changes to the wiring and certain electrical load management system (ELMS) panels. We are issuing this AD to ensure that the flightcrew is able to turn off electrical power to the IFE systems and other non- essential electrical systems through one or two switches in the flight deck in the event of smoke or flames. In the event of smoke or flames in the airplane flight deck or passenger cabin, the flightcrew's inability to turn off electrical power to the IFE system and other non- essential electrical systems could result in the inability to control smoke or flames in the airplane flight deck or passenger cabin during a non-normal or emergency situation, and consequent loss of control of the airplane.
For Group 1, Configuration 1, airplanes, as identified in Boeing Service Bulletin 777-24-0077, Revision 4, dated October 17, 2012: Within 60 months after the effective date of this AD, install a new electrical power control panel and make changes to the wiring and certain electrical load management system (ELMS) panels, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 777-24-0077, Revision 4, dated October 17, 2012.
For Group 1, Configuration 2, airplanes, as identified in Boeing Service Bulletin 777-24-0077, Revision 4, dated October 17, 2012: Within 60 months after the effective date of this AD, inspect the electrical power control panel to determine the part number, and do all applicable corrective actions, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 777-24-0077, Revision 4, dated October 17, 2012. Do all applicable corrective actions before further flight.
(1) For Group 1, Configuration 1, airplanes, as identified in Boeing Service Bulletin 777-24-0077, Revision 4, dated October 17, 2012: Prior to or concurrently with accomplishing the requirements of paragraph (g) of this AD, install new operational software (OPS) in the cabin management system to change the operation of the cabin lighting system when the CABIN/UTILITY switch is installed, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 777-23-0176, Revision 2, dated October 26, 2006.
(2) For Group 1, Configuration 1, airplanes, as identified in Boeing Service Bulletin 777-24-0077, Revision 4, dated October 17, 2012: Concurrently with accomplishing the requirements of paragraph (g) of this AD, change the ELMS OPS and configuration database software to decrease the number of ELMS P110, ELMS P210, and ELMS P310 panel engine indication and crew alerting system status messages, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 777-24-0087, Revision 2, dated August 16, 2007; or Boeing Service Bulletin 777-28A0039, Revision 2, dated September 20, 2010.
(1) This paragraph provides credit for the actions specified in paragraphs (g) and (h) this AD, if those actions were performed before the effective date of this AD using the service information identified in paragraph (k) of this AD, provided that, within 60 months after the effective date of this AD, the actions specified in paragraphs (j)(1)(i) and (j)(1)(ii) of this AD are done, and wire kit 280W5110-105W is used.
(i) Identify the electrical power control panels 233W3202-12 and 233W3202-13, in accordance with the Accomplishment Instructions of BAE Systems Service Bulletin 233W3202-24-04, Revision 2, dated October 2, 2006. The correct part number for the changed 233W3202-12 panel is 233W3202-18, and the correct part number for the changed 233W3202-13 panel is 233W3202-19.
(ii) Put back the P210 power panel to the correct standard, in accordance with the Accomplishment Instructions of GE Aviation Service Bulletin 6000ELM-24-614, Revision 1, dated November 9, 2009; or GE Aviation Service Bulletin 6200ELM-24-616, Revision 1, dated March 5, 2010.
(2) This paragraph provides credit for the actions specified in paragraph (i)(1) of this AD, if those actions were performed before the effective date of this AD using Boeing Service Bulletin 777-23-0176, dated January 9, 2003; or Boeing Service Bulletin 777-23-0176, Revision 1, dated March 11, 2004; which are not incorporated by reference in this AD; provided that the actions specified in Boeing Service Bulletin 777-23-0141, dated June 14, 2001, were done prior to or concurrently with the actions specified in Boeing Service Bulletin 777-23-0176, dated January 9, 2003; or Boeing Service Bulletin 777-23-0176, Revision 1, dated March 11, 2004.
(3) This paragraph provides credit for the actions specified in paragraph (i)(2) of this AD, if those actions were performed before the effective date of this AD using Boeing Service Bulletin 777-24-0087, dated July 24, 2003; or Boeing Service Bulletin 777-24-0087, Revision 1, dated December 18, 2003; which are not incorporated by reference in this AD; provided that the actions specified in Boeing Service Bulletin 777-24-0087, dated July 24, 2003; or Boeing Service Bulletin 777-24-0087, Revision 1, dated December 18, 2003; were done concurrently with the actions specified in the service information identified in paragraphs (j)(3)(i) through (j)(3)(v) of this AD.
(i) Boeing Service Bulletin 777-24-0077, dated August 21, 2003, which is not incorporated by reference in this AD.
(ii) Boeing Service Bulletin 777-24-0077, Revision 1, dated May 24, 2007, which is not incorporated by reference in this AD.
(iii) Boeing Service Bulletin 777-24-0077, Revision 2, dated December 17, 2009, 2007, which is not incorporated by reference in this AD.
(iv) Boeing Service Bulletin 777-24-0077, Revision 3, dated December 6, 2011, 2007, which is not incorporated by reference in this AD.
(v) Boeing Service Bulletin 777-24-0077, Revision 4, dated October 17, 2012.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
