Boeing 747 Series Aeroplanes
Boeing 747 Series Aeroplanes
Boeing 747 Series Aeroplanes
| AD/B747/366 | Fuel Pump Housing to WingStructure Electrical Bonding | 13/2007 |
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| Applicability: | Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F, 747SR, and 747SP series aircraft. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 2007-21-13Amdt 39-15231.Note: Boeing Service Bulletin 747-28-2259 original issue, Revision 1, andRevision 2, or later FAA approved revision, refers. |
| Compliance: | As specified in the Requirement document, with a revised effective date of20 December 2007. |
| This Airworthiness Directive becomes effective on 20 December 2007. | |
| Background: | The FAA requires reworking the electrical bonding between the aircraft structure and the pump housing of certain fuel override/jettison pumps, and also requires related investigative actions and corrective actions if necessary. Insufficient electrical bonding could result in potential ignition sources inside the fuel tanks, which, in combination with flammable fuel vapours, could result in a fuel tank explosion and consequent loss of the aircraft. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
7 November 2007