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AD/B737/276 Amdt 1 - Nacelle Support Fitting Attachment Fasteners
Boeing 737 Series AeroplanesBoeing 737 Series Aeroplanes
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Boeing 737 Series Aeroplanes
| AD/B737/276 Amdt 1 | Nacelle Support Fitting Attachment Fasteners | 5/2007 |
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| Applicability: | Model 737-600, -700, -700C, and -800 series aircraft, line numbers 1 through 761; except for line numbers 596, 683, 742, 749, 750, 751, 754, 755, 759, and 760. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 2005-24-03 R1Amdt 39-14955.Note: Boeing Service Bulletin 737-57-1275 Revision 3, or later FAA approved revision, refers. |
| Compliance: | As specified in the Requirement document, with a revised effective date of10 May 2007. |
| This Amendment becomes effective on 10 May 2007. | |
| Background: | The FAA received a report from the manufacturer that in production, during the installation of certain attachment fasteners for the nacelle support fittings, only one washer was installed instead of two. Inadequate fastener clamp-up could result in cracking of the fastener holes, cracking along the lower wing skin panels, fuel leaking from the wing fuel tanks onto the engines, and possible fire.Amendment 1 is issued in response to a revision of the Requirement document, which introduces Revision 3 of related Boeing Service Bulletin 737-57-1275. |
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David Punshon
Delegate of the Civil Aviation Safety Authority
28 March 2007