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AD/B767/223 - Electrical Bonding - Engine Fuel Feed Tube
Boeing 767 Series AeroplanesBoeing 767 Series Aeroplanes
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Boeing 767 Series Aeroplanes
| AD/B767/223 | Electrical Bonding - Engine Fuel Feed Tube | 7/2006 |
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| Applicability: | Model 767-200, -300 and -300F series aeroplanes, as identified in Boeing Service Bulletin (SB) 767-28A0071, Revision 2, dated 8 December 2005 together with Model 767-400ER series aeroplanes, as identified in Boeing SB 767-28A0072, Revision 2, dated 8 December 2005, |
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| Requirement: | 1. Accomplish a test of the bonding resistance between the engine fuel feed tube fitting and the front spar and apply sealant on a hex nut inside the dry bay in accordance with SB 767-28A0071, Revision 2, or SB 767-28A0072, Revision 2, as applicable. |
| 2. Carry out all applicable actions to correct anomalies detected during the Requirement 1 tests, by accomplishing all of the actions in the applicable service bulletin. | |
| Actions accomplished before the effective date of this Directive in accordance with Boeing Alert Service Bulletin (ASB) 767-28A0071, Revision 1, dated 22 January 2004 or Boeing ASB 767-28A0072, Revision 1, dated 22 January 2004, are acceptable for compliance with the Requirements of this Directive. | |
| Later revisions of the above SB(s), approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2006-08-04 are considered acceptable for compliance with the equivalent Requirements of this Directive. | |
| Note: FAA AD 2006-08-04 Amdt 39-14558 refers. | |
| Compliance: | For Requirement 1 - Within 60 months after the effective date of this Directive. |
| For Requirement 2 - Before further flight after accomplishing Requirement 1. | |
| This Airworthiness Directive becomes effective on 6 July 2006. |
| Background: | The FAA has received a report advising that the engine fuel feed tubes on certain Model 767 aeroplanes were found not electrically bonded to the front spar. This Directive requires performing a test of the bonding resistance between the engine fuel feed tube fitting and the front spar, applying sealant on a hex nut inside the dry bay, and performing any applicable corrective actions, these measures are designed to prevent an ignition source from entering the fuel tank during a lightning strike event, which could cause a fuel tank explosion. |
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