Division Boeing 747 Series Aeroplanes - AD/B747/388 Amdt 1 - Outboard Flap Track and Transmission Attachment - Boeing 747 Series Aeroplanes

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AD/B747/388 Amdt 1	Outboard Flap Track and Transmission Attachment	11/2009 DM

Applicability:	Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F, and 747SR series aircraft; as identified in Boeing Service Bulletins 747-27A2398 Revision 1, and 747-27A2421 Revision 1, or later FAA approved revisions.
Requirement:	Action in accordance with the technical requirements of FAA AD 2008-23-10 Amdt 39-15731.Boeing Alert Service Bulletin 747-27A2398 is approved by the FAA as an AMOC to the requirements of paragraphs (a) and (b) of FAA AD 2001-03-10 (AD/B747/242) for the number 1, 2, 7 and 8 trailing edge flap positions.
Compliance:	As specified in the Requirement document, with a revised effective date of15 January 2009.The compliance time remains unchanged by this issue of the Directive.
	This Amendment becomes effective on 2 September 2009.
Background:	The FAA issued AD 2008-23-10 as a result from a joint Boeing and FAA multi-model study (following in-service trailing edge flap structure and drive system events) on the hazards posed by skewing and failed flaps. This Directive requires modification of the outboard flap track and transmission attachments.Amendment 1 is issued to include a new paragraph to the Requirement section of this Directive, which introduces alternate means of compliance information affecting the outboard trailing edge flap positions.

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David Villiers
Delegate of the Civil Aviation Safety Authority

26 August 2009