Boeing 747 Series Aeroplanes
Boeing 747 Series Aeroplanes
Boeing 747 Series Aeroplanes
| AD/B747/389 | Trailing Edge Flap Tracksand Track Main Carriage | 2/2009 |
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| Applicability: | All Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D,-400F, and 747SR series aircraft. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 2008-25-07 Amdt 39-15765.Note: Boeing Alert Service Bulletin 747-57A2323 original issue, or later FAA approved revision, refers. |
| Compliance: | As specified in the Requirement document, with a revised effective date of12 February 2009. |
| This Airworthiness Directive becomes effective on 12 February 2009. | |
| Background: | The FAA issued AD 2008-25-07 as a result from a detailed structural analysis of the trailing edge flap attach structural and fail-safe components; accomplished as a result of a dynamic stability and control analysis, which could not demonstrate continued safe flight and landing of the aircraft after the loss of a trailing edge flap. This Directive requires repetitive inspections of the flap tracks attachment and the flap tracks, and for certain aircraft, modification of the fail-safe links of the main carriage. |
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David Punshon
Delegate of the Civil Aviation Safety Authority
17 December 2008