Document ID: chunk:federal_register_of_legislation:F2005L01952:body:0:p1
Version: federal_register_of_legislation:F2005L01952
Segment Type: other
Provision Reference: 
Character Range: 0–3211

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/B767/197 Amdt 2 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 767 Series Aeroplanes
AD/B767/197 Amdt 3  Air Data System  9/2005 DM

Applicability  Model 767-200, 767-300 and 767-300F series aeroplanes identified in Boeing Alert Service Bulletin (ASB) 767-34A0332, Revision 2, dated 30 September 2004.
Requirement:      1. Either:
                    a. Modify the air data switching system and do a system functional test, according to the Accomplishment Instructions of ASB 767-34A0332, Revision 1 dated 24 April 2003 or Revision 2.
                    or,
                    b. Carry out the following:
                       (i) Change the termination of the wires and perform an operational test, according to the Accomplishment Instructions of Boeing Special Attention SB 767-31-0149, Revision 1, dated 7 November 2002 or Revision 2 dated 11 November 2004 and
                       (ii) Modify the air data switching system and do a system functional test, according to the Accomplishment Instructions of SB 767-34A0332, Revision 1 or Revision 2.
               Note 1:  Requirement 1 provides two alternate methods of compliance, if Requirement 1.b. is selected the compliance date for the modification of the air data switching system (ASB 767-34A0332 Revision 1 or Revision 2) is extended from 24 months to 72 months.
               Modifications accomplished before the effective date of the original issue of this Directive in accordance with Boeing ASB 767-34A0332 dated 10 January 2002 are considered acceptable for compliance with Requirement 1.a.
               Modifications accomplished in accordance with Requirement 2 of the original issue of this Directive are also considered acceptable for compliance with Requirement 1.a.

                2. For aeroplanes that are identified in ASB 767-34A0332, Revision 2 and also identified in any of the Boeing service bulletins listed below, unless previously accomplished, carry out all actions associated with replacing the existing Engine Indication and Crew Alerting System (EICAS) computers with improved EICAS computers, according to the Accomplishment Instructions of the applicable service bulletin specified below.  This includes performing an EICAS readout comparison to ensure that the applicable software is used; replacing the existing EICAS computers with new, improved EICAS computers that can be upgraded with certain software together with making related wiring changes.
                  767-31-0091 Revision 3 dated 27 April 2000