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AD/B747/395 - Fuselage Stringer 11 Longeron between Station 2598 to 2607
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Boeing 747 Series Aeroplanes
| AD/B747/395 | Fuselage Stringer 11 Longeronbetween Station 2598 to 2607 | 10/2009 |
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| Applicability: | All 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 2009-12-08 Amdt 39-15931.Note: Boeing Service Bulletin 747-53A2703 Revision 1, or later FAA approved revision, refers. |
| Compliance: | As specified in the Requirement document, with a revised effective date of24 September 2009. |
| This Airworthiness Directive becomes effective on 24 September 2009. | |
| Background: | The FAA received a report of a crack in the fuselage right-side Stringer 11 longeron horizontal flange, adjacent to the horizontal stabiliser pivot bulkhead, during a routine maintenance inspection. Such fatigue cracking, unless detected and corrected, could propagate and cause damage to the adjacent horizontal stabiliser pivot bulkhead. This damage could result in loss of structural integrity and consequent inability of the bulkhead to carry flight loads. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
12 August 2009