Airworthiness Directive · Amendment 39-17317 · Communications
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 737-300, -400, and -500 series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 737-23-1302, dated August 24, 2009; and Model 757-200 series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 757-23-0107, Revision 1, dated May 16, 2012.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, 737-400, 737-500, and 757-200 series airplanes. This AD was prompted by a report of damage caused by electrical arcing to the wires that connect seat electronics boxes (SEBs). This AD requires installing a new relay and doing certain wiring changes of the entertainment control switch. We are issuing this AD to prevent power from being supplied to passenger seats when the entertainment control switch is in the OFF position, which could cause an electrical shock hazard resulting in serious or fatal injury to maintenance personnel.
Within 24 months after the effective date of this AD: Change the wire bundle route, and install a new relay and applicable wiring of the entertainment control switch, in accordance with the Accomplishment Instructions of the service information specified in paragraph (g)(1) or (g)(2) of this AD, as applicable.
(1) For Model 737-300, -400, and -500 series airplanes: Use Boeing Special Attention Service Bulletin 737-23-1302, dated August 24, 2009.
(2) For Model 757-200 series airplanes: Use Boeing Special Attention Service Bulletin 757-23-0107, Revision 1, dated May 16, 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.
Aircraft
