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AD/B747/143 Amdt 1 - Fuselage Section 41 Skin Stringer Joints
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Boeing 747 Series Aeroplanes
| AD/B747/143 Amdt 1 | Fuselage Section 41 Skin Stringer Joints | 2/2007 |
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| Applicability: | Model 747-100, -100B, -200B, -200C, -200F, 747SR, and 747SP series aircraft; line numbers 001 through 430. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 2006-24-02 Amdt 39-14831. |
| Compliance: | As specified in the Requirement document, with a revised effective date of15 February 2007. |
| This Amendment becomes effective on 15 February 2007. | |
| Background: | A number of operators reported skin cracks at skin-stringer fastener locations. Some cracks were up to 0.5" long. Skin cracks that reach critical length can cause an in flight de-pressurization.Amendment 1 is issued in response to a new FAA AD, which requires an additional inspection of areas that may have Alodine-coated rivets installed. The FAA received a report of cracking that was detected in a skin lap joint previously inspected using the eddy current method. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
3 January 2007