Airworthiness Directive · Amendment 39-22113 · Fuel
BAE Systems (Operations) Limited Airplanes
This AD applies to BAE Systems (Operations) Limited Model 4101 airplanes, certificated in any category, all serial numbers.
The FAA is superseding Airworthiness Directive (AD) 2008-16- 06, which applied to all BAE Systems (Operations) Limited Model 4101 airplanes. AD 2008-16-06 required the installation of additional bonding leads, inspection of existing bonding leads for defects, inspection of fuel system pipe runs in the wings to ensure appropriate clearances are maintained, and corrective actions. This AD continues to require the actions in AD 2008-16-06, and adds a requirement to install additional bonding leads around the crossfeed valve and accomplish a resistance check. This AD was prompted by a report that there is insufficient bonding of the crossfeed valve in the fuel tank area. The FAA is issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (f) of AD 2008-16-06, with revised service information. Within 24 months after September 9, 2008 (the effective date of AD 2008-16-06), unless already done, do the actions specified in paragraphs (g)(1) through (3) of this AD.
(1) Inspect the bonding leads between ribs 1 and 9, and between ribs 16 and 19, in the left-hand (LH) and right-hand (RH) wings in accordance with paragraph 2.B.(2) of the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 1, dated January 10, 2008; or BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019; and, before next flight, replace all defective bonding leads with airworthy parts in accordance with BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 1, dated January 10, 2008; or BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019. As of the effective date of this AD, BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019, must be used for the actions required by this paragraph.
(2) Inspect all fuel system pipe runs inside the LH and RH wings in accordance with paragraph 2.B.(3) of the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 1, dated January 10, 2008; or BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019; and, if incorrect clearances are found, before next flight, adjust clearances in accordance with BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 1, dated January 10, 2008; or BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019. As of the effective date of this AD, BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019, must be used for the actions required by this paragraph.
(3) Install additional electrical bonding of components within the LH and RH wings in accordance with paragraphs 2.B.(4) through 2.B.(15) of the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 1, dated January 10, 2008; or paragraphs 2.B.(4) and 2.B.(6) through 2.B.(16) inclusive of BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019. As of the effective date of this AD, BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019, must be used for the actions required by this paragraph.
Within 24 months after the effective date of this AD, install additional bonding leads on components within the dry bay at Rib 1 on the airplane centerline and below the fuselage (around the crossfeed valve) and perform a resistance check in accordance with paragraph 2.B.(5) of BAE Systems (Operations) Limited Service Bulletin J41-28-013, Revision 2, dated July 8, 2019.
