Boeing 747 Series Aeroplanes
Boeing 747 Series Aeroplanes
Boeing 747 Series Aeroplanes
| AD/B747/205 Amdt 2 | Lower Lobe Fuselage Frames | 2/2007 |
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| Applicability: | Model 747-100, -100B, -100B SUD, -200B, -300, -400, -400D, and 747SR series aircraft, as listed in Boeing Alert Service Bulletin 747-53A2408 Revision 1, or later FAA approved revision. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 2006-09-06 R1 Amdt 39-14842. |
| Compliance: | As specified in the Requirement document, with a revised effective date of15 February 2007. |
| This Amendment becomes effective on 15 February 2007. | |
| Background: | The FAA received reports indicating that fatigue cracks were found in lower lobe frames on the left side of the fuselage. Undetected fatigue cracking of lower lobe fuselage frames could lead to fatigue cracks in the fuselage skin, and result in rapid decompression of the aircraft.Amendment 1 retained all the requirements of the original AD, while expanding aircraft applicability.Amendment 2 is issued in response to a revision of the related FAA AD, which specifies appropriate service information for certain corrective actions. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
3 January 2007