Document ID: chunk:federal_register_of_legislation:F2006L02986:body:0:p1
Version: federal_register_of_legislation:F2006L02986
Segment Type: other
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Character Range: 0–6935

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/B737/293  Master Dim and Test System Wiring  10/2006

Applicability:                                                                  Model 737-300, -400 and -500 series aeroplanes identified in Boeing Special Attention Service Bulletin (SB) 737-33-1132, Revision 2, dated 8 September 2005; and Model 737-600, -700, -700C, -800 and -900 series aeroplanes identified in Boeing SB 737-33-1133, Revision 3, dated 8 September 2005.
Requirement:                                                                       1. Modify the wiring for the master dim test system in accordance with the Accomplishment Instructions of Special Attention SB 737-33-1132, Revision 2 (for Model 737-300, -400 and -500 series aeroplanes) and SB 737-33-1133, Revision 3 (for Model 737-600, -700, -700C, -800 and -900 series aeroplanes), as applicable.
                                                                                   2. Accomplish the prior or concurrent actions specified in Table 1, as applicable.
                                                                                Table 1 - Prior and/or Concurrent Actions
                                                                                For:                                                                                                                                                                                                                                                                                                                             Accomplish all actions associated with:                                  According to the Accomplishment Instructions of:
Group 57 aeroplanes identified in Special Attention SB 737-33-1132, Revision 2   Installing an engine instrument system (EIS), and                                                                                                                                                                                                                                                                               Boeing SB 737-77-1022, Revision 1, dated 26 October 1989
 Modifying the advisory system for the EIS                                      Boeing SB 737-77-1023, Revision 1, dated 9 November 1989
Group 37 and 46 aeroplanes identified in SB 737-33-1133, Revision 3              Installing wiring for the test system for the audio control panel lamp                                                                                                                                                                                                                                                          Boeing SB 737-33-1121, Revision 1, dated 19 December 2002
Group 2 aeroplanes identified in Boeing SB 737-33-1121, Revision 1               Installing splice SP896                                                                                                                                                                                                                                                                                                         Boeing Service Bulletin 737-26A1083, Revision 1, dated 15 November 2001

                                   Group 39 aeroplanes identified in SB                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Installing a smoke detection and fire extinguishing system in the cargo compartment                              Boeing SB 737-26A1083, Revision 1
                                   737-33-1133, Revision 3
                                   Group 59 aeroplanes identified in Special Attention SB 737-33-1132, Revision 2                                                                                                                                                                                                                                                                                                                                                                                                                                                      Replacing the very high frequency (VHF) and high frequency (HF) communications panels with radio control panels  Boeing SB 737-23-1102, dated 3 June 1999
                                   Actions accomplished before the effective date of this Directive in accordance with the service bulletins identified in Table 2 are considered acceptable for compliance with the corresponding actions specified in this Directive.
                                   Table 2 - Previous Issues of Service Bulletins
                                   Service Bulletin                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Revision                                                                                                          Date
 Special Attention SB 737-33-1133    Original                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           19 December 2002
 SB 737-33-1133