AD/B737/326 Engine Strut Aft Fairing Drain Tube Assembly (Cth)

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Boeing 737 Series Aeroplanes

AD/B737/326 Engine Strut Aft Fairing Drain Tube Assembly 6/2008

Applicability:	Model 737-600, -700, -700C, -800, and -900 series aircraft; as identified in Boeing Special Attention Service Bulletin 737-54-1043 original issue, or later FAA approved revision.
Requirement:	Action in accordance with the technical requirements of FAA AD 2008-08-24 Amdt 39-15478.
Compliance:	As specified in the Requirement document, with a revised effective date of 5 June 2008.
This Airworthiness Directive becomes effective on 5 June 2008.
Background:	The FAA received reports of failure of the drain tube assembly and clamp on the aft fairings of an engine strut.  Such a failure could allow leaked flammable fluids in the drain systems to discharge on to the heat shields of the aft fairings of the engine struts, which could result in an undetected and uncontrollable fire.

David Villiers
Delegate of the Civil Aviation Safety Authority

23 April 2008