Airworthiness Directive · Amendment 39-17698 · Fuel
The Boeing Company Airplanes
(1) This AD applies to The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category, as identified in Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011.
(2) This AD requires revisions to certain operator maintenance documents to include new actions (e.g., inspections). Compliance with these actions is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by this AD, the operator may not be able to accomplish the actions described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (p) of this AD. The request should include a description of changes to the required actions that will ensure the continued operational safety of the airplane.
We are superseding Airworthiness Directive (AD) 2000-11-06 for certain The Boeing Company Model 767 airplanes. AD 2000-11-06 required repetitive inspections to detect discrepancies of the wiring and surrounding Teflon sleeves of the fuel tank boost pumps and override/ jettison pumps; replacement of the sleeves with new sleeves, for certain airplanes; and repair or replacement of the wiring and sleeves with new parts, as necessary. This new AD requires reducing the initial compliance time and repetitive inspection interval in AD 2000-11-06; mandates a terminating action for the repetitive inspections to eliminate wire damage; removes certain airplanes from the applicability; and requires revising the maintenance program to incorporate changes to the airworthiness limitations section. This AD was prompted by fleet information indicating that the repetitive inspection interval in AD 2000-11-06 is too long, because excessive chafing of the sleeving continues to occur much earlier than expected between scheduled inspections. We are issuing this AD to detect and correct chafing of the fuel pump wire insulation and consequent exposure of the electrical conductor, which could result in electrical arcing between the wires and conduit and consequent fire or explosion of the fuel tank.
This paragraph restates the requirements of paragraph (a) of AD 2000-11-06, Amendment 39-11754 (65 FR 34928, June 1, 2000; corrected August 1, 2000 (65 FR 46862)), with revised service information. Perform a detailed visual inspection to detect discrepancies—including the presence of cuts, splits, holes, worn areas, and lacing ties installed on the outside of the sleeves (except at the sleeve ends)—of the Teflon sleeves surrounding the wiring of the fuel tank boost pumps and override/jettison pumps, at the earlier of the times specified in paragraphs (g)(1) and (g)(2) of this AD, in accordance with Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. Repeat the inspection thereafter at intervals not to exceed 60,000 flight hours or 30,000 flight cycles, whichever occurs first. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(1) Prior to the accumulation of 50,000 total flight hours, or within 90 days after July 6, 2000 (the effective date of AD 2000-11-06, Amendment 39-11754 (65 FR 34928, June 1, 2000; corrected August 1, 2000 (65 FR 46862)), whichever occurs later.
(2) Within 18 months after July 6, 2000 (the effective date of AD 2000-11-06, Amendment 39-11754 (65 FR 34928, June 1, 2000; corrected August 1, 2000 (65 FR 46862)).
This paragraph restates the requirements of paragraph (b) of AD 2000-11-06, Amendment 39-11754 (65 FR 34928, June 1, 2000; corrected August 1, 2000 (65 FR 46862)), with revised service information. If any discrepancy is detected during any inspection required by paragraph (g) of this AD: Prior to further flight, remove the Teflon sleeves and perform a detailed visual inspection to detect damage of the wiring, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(1) If no damage to the wiring is detected, prior to further flight, install new Teflon sleeves, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(2) If any damage to the wiring is detected, prior to further flight, accomplish the requirements of paragraph (i) of this AD.
This paragraph restates the requirements of paragraph (c) of AD 2000-11-06, Amendment 39-11754 (65 FR 34928, June 1, 2000; corrected August 1, 2000 (65 FR 46862)), with revised service information. If any damage to the wiring is detected during any inspection required by paragraph (h) of this AD: Prior to further flight, perform a detailed visual inspection to determine if the wiring damage was caused by arcing, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(1) If the wire damage was not caused by arcing: Prior to further flight, repair any damaged wires or replace the wires with new or serviceable wires, as applicable, and install new Teflon sleeves, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(2) If any damage caused by arcing is found: Prior to further flight, perform an inspection for signs of fuel inside the conduit or on the wires, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(i) If no sign of fuel is found, accomplish the actions specified in paragraphs (i)(2)(i)(A), (i)(2)(i)(B), (i)(2)(i)(C), and (i)(2)(i)(D) of this AD.
(A) Prior to further flight, repair the wires or replace the wires with new or serviceable wires, as applicable, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(B) Prior to further flight, install new Teflon sleeves, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(C) Repeat the inspection for signs of fuel inside the conduit thereafter at intervals not to exceed 500 flight hours, until the requirements of paragraph (i)(2)(i)(D) of this AD have been accomplished. If any fuel is found inside the conduit during any inspection required by this paragraph, prior to further flight, replace the conduit with a new or serviceable conduit, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. Thereafter, repeat the inspection specified in paragraph (g) of this AD at intervals not to exceed 60,000 flight hours or 30,000 flight cycles, whichever occurs first. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(D) Within 6,000 flight hours or 18 months after the initial fuel inspection specified by paragraph (i)(2) of this AD, whichever occurs first, replace the conduit with a new or serviceable conduit, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. Such conduit replacement constitutes terminating action for the repetitive fuel inspections required by paragraph (i)(2)(i)(C) of this AD. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
(ii) If any fuel is found in the conduit or on any wire: Prior to further flight, replace the conduit with a new or serviceable conduit, replace damaged wires with new or serviceable wires, and install new Teflon sleeves; in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. Thereafter, repeat the inspection specified in paragraph (g) of this AD at intervals not to exceed 60,000 flight hours or 30,000 flight cycles, whichever occurs first. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
This paragraph restates the requirements of paragraph (d) of AD 2000-11-06, Amendment 39-11754 (65 FR 34928, June 1, 2000; corrected August 1, 2000 (65 FR 46862)), with revised service information. For any wire bundle removed and reinstalled during any inspection required by this AD: Prior to further flight after such reinstallation, retest the fuel pump, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 1, dated August 5, 1999; Boeing Alert Service Bulletin 767-28A0053, Revision 2, dated June 24, 2010; or Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. As of the effective date of this AD, only Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011, may be used to do the actions required by this paragraph.
Do the inspection required by paragraph (g) of this AD at the time specified in paragraph (k)(1) or (k)(2) of this AD, as applicable, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0053, Revision 3, dated November 11, 2011. Repeat the inspection thereafter at intervals not to exceed 15,000 flight hours. Accomplishing the first inspection in this paragraph ends the repetitive inspection requirements in paragraph (g) of this AD.
(1) For airplanes on which the inspection required by paragraph (g) of this AD has been done as of the effective date of this AD: Do the inspection within 15,000 flight hours after the most recent inspection, or within 6,000 flight hours after the effective date of this AD, whichever occurs later, but not to exceed 60,000 flight hours after the most recent inspection required by paragraph (g) of this AD.
(2) For airplanes on which the inspection required by paragraph (g) of this AD has not been done as of the effective date of this AD: Do the inspection before the accumulation of 15,000 total flight hours, or within 6,000 flight hours after the effective date of this AD, whichever occurs later.
Within 60 months after the effective date of this AD: Replace the fuel boost pump and override/jettison pump wire bundles inside the in-tank electrical conduit with a conduit liner and new wire bundles, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-28A0104, Revision 1, dated March 2, 2012. Accomplishing the replacement specified in this paragraph ends the repetitive inspection requirements in paragraphs (g) and (k) of this AD.
