Airworthiness Directive · Amendment 39-18533 · Fuel
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes; certificated in any category; equipped with Rolls-Royce engines; as identified in Boeing Alert Service Bulletins 757-28A0073 and 757-28A0074, both Revision 2, both dated June 4, 2009.
We are superseding Airworthiness Directive (AD) 2005-18-18 for certain The Boeing Company Model 757 airplanes. AD 2005-18-18 required inspections of certain wire bundles in the left and right engine-to- wing aft fairings for discrepancies; installation of back-to-back p- clamps between the wire and hydraulic supply tube at the aft end of the right-hand strut only; and associated re-routing of the wire bundles, if necessary. This new AD also requires an installation of spiral cable wrap on fuel shutoff valve (FSV) wires at the aft end of the strut, for both left and right engines, and related investigative and corrective actions. This AD was prompted by a determination that the service information referenced in AD 2005-18-18 did not adequately address FSV wires at the aft end of the struts. We are issuing this AD to prevent chafing between the wire bundle and the structure of the aft fairing, which could result in electrical arcing and subsequent ignition of flammable vapors and a possible uncontrollable fire.
This paragraph restates the requirements of paragraph (f) of AD 2005-18-18, with new service information and an exception to certain service information. Within 60 months after October 14, 2005 (the effective date of AD 2005-18-18), do the actions required by paragraphs (g)(1) and (g)(2) of this AD. Where Boeing Alert Service Bulletin 757-28A0074, Revision 2, dated June 4, 2009, states “SWPM 20-10-11, Table IX,” the correct phrase is “SWPM 20-10-11, `Minimum Clearance' Table.”
(1) Accomplish the detailed inspections for discrepancies of the wire bundles in the left and right engine-to-wing aft fairings, and applicable and related investigative and corrective actions if necessary, as applicable, by doing all the actions specified in the Accomplishment Instructions of the applicable service bulletins listed in paragraphs (g)(1)(i) and (g)(1)(ii) of this AD. As of the effective date of this AD, use only Boeing Alert Service Bulletin 757-28A0073 or 757-28A0074, both Revision 2, both dated June 4, 2009, as applicable. Accomplish any related investigative and corrective actions before further flight, in accordance with the applicable service bulletin. For the purposes of this AD, a detailed inspection is: “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.”
(i) For Boeing Model 757-200, -200CB, and -200PF series airplanes, use the service information identified in paragraphs (g)(1)(i)(A), (g)(1)(i)(B), and (g)(1)(i)(C) of this AD.
(A) Boeing Alert Service Bulletin 757-28A0073, dated November 20, 2003;
(B) Boeing Alert Service Bulletin 757-28A0073, Revision 1, dated February 24, 2005.
(C) Boeing Alert Service Bulletin 757-28A0073, Revision 2, dated June 4, 2009.
(ii) For Boeing Model 757-300 series airplanes, use the service information identified in paragraphs (g)(1)(ii)(A), (g)(1)(ii)(B), and (g)(1)(ii)(C) of this AD.
(A) Boeing Alert Service Bulletin 757-28A0074, dated November 20, 2003.
(B) Boeing Alert Service Bulletin 757-28A0074, Revision 1, dated February 24, 2005.
(C) Boeing Alert Service Bulletin 757-28A0074, Revision 2, dated June 4, 2009.
(2) Install back-to-back p-clamps between the wire and hydraulic supply tube at the aft end of the right-hand strut only; and re-route the wire bundles, if necessary; by doing all the applicable actions specified in the Accomplishment Instructions of the applicable service information identified in paragraphs (g)(2)(i) through (g)(2)(iv) of this AD. As of the effective date of this AD, use only the service information identified in paragraphs (g)(2)(ii) and (g)(2)(iv) of this AD, as applicable.
(i) Boeing Alert Service Bulletin 757-28A0073, Revision 1, dated February 24, 2005.
(ii) Boeing Alert Service Bulletin 757-28A0073, Revision 2, dated June 4, 2009.
(iii) Boeing Alert Service Bulletin 757-28A0074, Revision 1, dated February 24, 2005.
(iv) Boeing Alert Service Bulletin 757-28A0074, Revision 2, dated June 4, 2009.
Within 60 months after the effective date of this AD, install spiral cable wrap on FSV wires at the aft end of the strut, for both left and right engines, and do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 757-28A0073 (for Model 757-200, -200CB, and -200PF series airplanes) or 757-28A0074 (for Model 757-300 series airplanes), both Revision 2, both dated June 4, 2009. Where Boeing Alert Service Bulletin 757-28A0074, Revision 2, dated June 4, 2009, states “SWPM 20-10-11, Table IX,” the correct phrase is “SWPM 20-10-11, `Minimum Clearance' Table.” Do all applicable related investigative and corrective actions before further flight.
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.
