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AD/B747/351 - Engine Pylon Internal Structure
Boeing 747 Series AeroplanesBoeing 747 Series Aeroplanes
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Boeing 747 Series Aeroplanes
| AD/B747/351 | Engine Pylon Internal Structure | 10/2006 |
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| Applicability: | Model 747-200B, -200C, -200F, -300, and 747SR series aircraft; as identified in Boeing Special Attention Service Bulletin 747-54-2223 original issue, or later FAA approved revision. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 2006-16-10 Amdt 39-14710. |
| Compliance: | As specified in the Requirement document, with a revised effective date of28 September 2006. |
| This Airworthiness Directive becomes effective on 28 September 2006. | |
| Background: | The FAA received reports of heat damage and cracking of the skin and internal structure adjacent to and aft of the pre-cooler exhaust vent on several engine struts. Undetected cracking, buckling, wrinkling, or heat damage of the skin and internal structure of the engine struts could result in extensive damage to the engine struts, and consequent possible in-flight separation of an affected engine. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
17 August 2006