Airworthiness Directive · Amendment 39-21757 · Fuel
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category, having line numbers (L/N) 1 through 1200 inclusive.
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes. This AD was prompted by significant changes made to the airworthiness limitations (AWLs) related to fuel tank ignition prevention and the nitrogen generation system. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate the latest revision of the AWLs. The FAA is issuing this AD to address the unsafe condition on these products.
Within 60 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the applicable information in Section A, including Subsections A.1, A.2, A.3, A.4, and A.5, of Boeing 767-200/300/300F/400ER Special Compliance Items/Airworthiness Limitations, D622T001-9-04, dated January 2020; except as provided by paragraph (h) of this AD. The initial compliance times for the airworthiness limitation instructions (ALI) tasks are within the applicable compliance times specified in paragraphs (g)(1) through (14) of this AD:
(1) For airplanes identified in the applicability for AWL No. 28-AWL-01, “External Wires Over Auxiliary (Center) Fuel Tank”: At the applicable time specified in paragraph (g)(1)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-01 in their maintenance or inspection program before the effective date of this AD: Within 144 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 12 months after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(1)(i) of this AD: Within 144 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 144 months after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-01; whichever occurs later.
(2) For airplanes identified in the applicability for AWL No. 28-AWL-05, “Lightning Protection—Hydraulic Line Fuel Tank Penetration Bonding Path”: At the applicable time specified in paragraph (g)(2)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-05 in their maintenance or inspection program before the effective date of this AD: At the later of the times specified in paragraphs (g)(2)(i)(A) and (B) of this AD.
(A) Within 25,000 flight hours or 72 months, whichever occurs first since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 60 days after the effective date of this AD.
(ii) For airplanes not identified in paragraph (g)(2)(i) of this AD: At the later of the times specified in paragraphs (g)(2)(ii)(A) and (B) of this AD.
(A) Within 25,000 flight hours or 72 months, whichever occurs first since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 25,000 flight hours or 72 months, whichever occurs first after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-05.
(3) For airplanes identified in the applicability for AWL No. 28-AWL-18, “Fuel Quantity Indicating System (FQIS)—Out of Tank Wiring Lightning Shield to Ground Termination”: At the applicable time specified in paragraph (g)(3)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-18 in their maintenance or inspection program before the effective date of this AD: Within 144 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 12 months after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(3)(i) of this AD: Within 144 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 144 months after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-18; whichever occurs later.
(4) For airplanes identified in the applicability for AWL No. 28-AWL-20, “Auxiliary (Center) Tank Override Fuel Pumps Auto Shutoff Circuit”: At the applicable time specified in paragraph (g)(4)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-20 in their maintenance or inspection program before the effective date of this AD: Within 12 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 60 days after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(4)(i) of this AD: At the latest of the times specified in paragraphs (g)(4)(ii)(A) through (C) of this AD.
(A) Within 12 months since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 12 months after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-20.
(C) Within 12 months after accomplishment of the actions specified in Boeing Service Bulletin 767-28A0083 or Boeing Service Bulletin 767-28A0084, as applicable.
(5) For airplanes identified in the applicability for AWL No. 28-AWL-21, “AC and DC Fuel Pump Fault Current Bonding Jumper Installation”: At the applicable time specified in paragraph (g)(5)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-21 in their maintenance or inspection program before the effective date of this AD: Within 72 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 6 months after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(5)(i) of this AD: Within 72 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 72 months after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-21; whichever occurs later.
(6) For airplanes identified in the applicability for AWL No. 28-AWL-27, “Over-Current and Arcing Protection Electrical Design Features Operation—AC Fuel Pump Ground Fault Interrupter (GFI)”: At the applicable time specified in paragraph (g)(6)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-27 in their maintenance or inspection program before the effective date of this AD: Within 12 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 60 days after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(6)(i) of this AD: At the latest of the times specified in paragraphs (g)(6)(ii)(A) through (C) of this AD.
(A) Within 12 months since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 12 months after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-27.
(C) Within 12 months after accomplishment of the actions specified in Boeing Service Bulletin 767-28A0085.
(7) For airplanes identified in the applicability for AWL No. 28-AWL-28, “Auxiliary (Center) Tank Override/Jettison Fuel Pump Failed On Protection System”: At the applicable time specified in paragraph (g)(7)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-28 in their maintenance or inspection program before the effective date of this AD: Within 12 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 60 days after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(7)(i) of this AD: At the latest of the times specified in paragraphs (g)(7)(ii)(A) through (C) of this AD.
(A) Within 12 months since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 12 months after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-28.
(C) Within 12 months after accomplishment of the actions specified in Boeing Service Bulletin 767-28A0085.
(8) For airplanes identified in the applicability for AWL No. 28-AWL-35, “Cushion Clamps and Teflon Sleeving Installed on Out-of-Tank Wire Bundles Installed on Brackets that are Mounted Directly on the Fuel Tanks”: At the applicable time specified in paragraph (g)(8)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-35 in their maintenance or inspection program before the effective date of this AD: Within 144 months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 12 months after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(8)(i) of this AD: At the latest of the times specified in paragraphs (g)(8)(ii)(A) through (C) of this AD.
(A) Within 144 months since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 144 months after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-35.
(C) Within 144 months after accomplishment of the actions specified in Boeing Service Bulletin 767-57A0102.
(9) For airplanes identified in the applicability for AWL No. 28-AWL-37, “FQIS BITE Test (Auxiliary (Center) Tank Circuit Test)”: At the applicable time specified in paragraph (g)(9)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-37 in their maintenance or inspection program before the effective date of this AD: Within 750 flight hours since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 60 days after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(9)(i) of this AD: Within 750 flight hours since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 750 flight hours after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-37; whichever occurs later.
(10) For airplanes identified in the applicability for AWL No. 28-AWL-38, “Fuel Level Sensing System (FLSS) Dry Capacitance Test”: At the applicable time specified in paragraph (g)(10)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-38 in their maintenance or inspection program before the effective date of this AD: Within 750 flight hours since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 60 days after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(10)(i) of this AD: Within 750 flight hours since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 750 flight hours after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-38; whichever occurs later.
(11) For airplanes identified in the applicability for AWL No. 28-AWL-101, “Engine Fuel Suction Feed Operational Test”: At the applicable time specified in paragraph (g)(11)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-101 in their maintenance or inspection program before the effective date of this AD: At the later of the times specified in paragraphs (g)(11)(i)(A) and (B) of this AD.
(A) Within 7,500 flight hours or 36 months, whichever occurs first since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 60 days after the effective date of this AD.
(ii) For airplanes not identified in paragraph (g)(11)(i) of this AD: At the later of the times specified in paragraphs (g)(11)(ii)(A) and (B) of this AD.
(A) Within 7,500 flight hours or 36 months, whichever occurs first since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 7,500 flight hours or 36 months, whichever occurs first after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-101.
(12) For airplanes identified in the applicability for AWL No. 28-AWL-102, “Fuel Quantity Indicating System (FQIS)— Low Fuel and Fuel Config Indication Test”: At the applicable time specified in paragraph (g)(12)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 28-AWL-102 in their maintenance or inspection program before the effective date of this AD: Within 750 flight hours since issuance of the original airworthiness certificate or original export certificate of airworthiness; or within 60 days after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(12)(i) of this AD: At the latest of the times specified in paragraphs (g)(12)(ii)(A) through (C) of this AD.
(A) Within 750 flight hours since issuance of the original airworthiness certificate or original export certificate of airworthiness.
(B) Within 750 flight hours after the most recent inspection, if any, was performed as specified in AWL No. 28-AWL-102.
(C) Within 750 flight hours after accomplishment of the actions specified in Boeing Service Bulletin 767-31-0295 or Boeing Service Bulletin 767-31-0302, as applicable.
(13) For airplanes identified in the applicability for AWL No. 47-AWL-04, “Nitrogen Generation System (NGS)—Nitrogen-Enriched Air (NEA) Distribution Ducting”: At the applicable time specified in paragraph (g)(13)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 47-AWL-04 in their maintenance or inspection program before the effective date of this AD: Within the applicable interval specified in AWL No. 47-AWL-04 since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 4 months after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(13)(i) of this AD: Within the applicable interval specified in AWL No. 47-AWL-04 since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within that applicable interval since the most recent inspection, if any, was performed as specified in AWL No. 47-AWL-04; whichever occurs later.
(14) For airplanes identified in the applicability for AWL No. 47-AWL-05, “Nitrogen Generation System (NGS)—Cross Vent Check Valve”: At the applicable time specified in paragraph (g)(14)(i) or (ii) of this AD.
(i) For airplanes that did not have any version of AWL No. 47-AWL-05 in their maintenance or inspection program before the effective date of this AD: Within the applicable interval specified in AWL No. 47-AWL-05 since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 4 months after the effective date of this AD, whichever occurs later.
(ii) For airplanes not identified in paragraph (g)(14)(i) of this AD: Within the applicable interval specified in AWL No. 47-AWL-05 since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within that applicable interval since the most recent inspection, if any, was performed as specified in AWL No. 47-AWL-05; whichever occurs later.
As an option, during accomplishment of the actions required by paragraph (g) of this AD, the changes specified in paragraphs (h)(1) and (2) of this AD are acceptable.
(1) Where AWL No. 28-AWL-09 identifies wire types BMS 13-48, BMS 13-58, and BMS 13-60, the following acceptable wire types and cables can be added to AWL No. 28-AWL-09: MIL-W-22759/16, SAE AS22759/16 (formerly M22759/16), MIL-W-22759/32, SAE AS22759/32 (formerly M22759/32), MIL-W-22759/34, SAE AS22759/34 (formerly M22759/34), MIL-W-22759/41, SAE AS22759/41 (formerly M22759/41), MIL-W-22759/86, SAE AS22759/86 (formerly M22759/86), MIL-W-22759/87, SAE AS22759/87 (formerly M22759/87), MIL-W-22759/92, and SAE AS22759/92 (formerly M22759/92); and MIL-C-27500 and NEMA WC 27500 cables that are constructed from these military or SAE specification wire types, as applicable.
(2) Where AWL No. 28-AWL-09 identifies TFE-2X Standard wall for wire sleeving, the following sleeving materials are acceptable: Roundit 2000NX and Varglas Type HO, HP, or HM, Grade A.
After the existing maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions (e.g., inspections), intervals, or CDCCLs may be used unless the actions, intervals, and CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k) of this AD.
Accomplishment of the revision required by paragraph (g) of this AD terminates the requirements specified in paragraphs (j)(1) through (7) of this AD for that airplane:
(1) The revision required by paragraphs (g) and (h) of AD 2008-11-01 R1.
(2) The revision required by paragraph (h) of AD 2010-06-10.
(3) The revision required by paragraph (k) of AD 2011-25-05.
(4) The revision required by paragraph (n) of AD 2013-25-02.
(5) The revision required by paragraph (g) of AD 2014-08-09.
(6) The revision required by paragraph (h) of AD 2014-20-02.
(7) The revision required by paragraphs (i)(3)(i) and (ii) of AD 2018-20-13.
