AIRWORTHINESS DIRECTIVE
On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B737/334 and issues the following 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/B737/334 Amdt 1
Flight Deck Windows No.2, No.4, and No.5
7/2012
 
Applicability:
Model 737-600, -700, -700C, -800, -900, and -900ER series aircraft.

Requirement:
Action in accordance with the technical requirements of FAA AD 2008-11-08
Amdt 39-15530.
Boeing Alert Service Bulletin 737-56A1022 Rev 1 dated 12 March 2010 approved by the United States Federal Aviation Administration (FAA) as an Alternative Method of Compliance (AMOC) to FAA AD 2008-11-08 Amendment 39-15530 is considered acceptable for compliance with the Requirements of this AD.

Compliance:
As specified in the Requirement document, with a revised effective date of
16 April 2012

 
This Amendment becomes effective on 16 April 2012.

Background:
The FAA received reports of in-flight departure and separation of certain flight deck windows.  This Directive requires inspections to detect and correct cracking in the vinyl interlayer or damage to the structural inner glass panes of flight deck windows No. 2, No. 4, and No.5.  Such cracking and damage could result in loss of a window and rapid loss of cabin pressure.
Amendment 1 notates the acceptability of an FAA approved AMOC for compliance with the equivalent requirements of this AD.
The original issue of this Airworthiness Directive became effective on 31 July 2008.

Charles Lenarcic
Delegate of the Civil Aviation Safety Authority
5 April 2012