AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/A320/127 Amdt 1 and issues the following AD under subregulation 39.1 (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.
Airbus Industrie A319, A320 and A321 Series Aeroplanes
AD/A320/127
Amdt 2
Fuel Quantity Indication System Wiring 10/2004
Applicability: Model A319, A320, and A321 series aeroplanes, except those on which Airbus Industrie Modification 28289 has been embodied during production or Airbus Industrie Service Bulletin (SB) A320-92-1007 Revision 8 has been incorporated whilst in service.
Requirement: Install additional protective conduits and new supports to ensure physical route segregation between the low voltage wire bundles of the fuel quantity indicating system (FQIS) and the high voltage wire bundles of the ground power control unit (GPCU) in accordance with Airbus Service Bulletin A320-92-1007 Revision 8 or later revision approved by the DGAC.
A319 and A320 aeroplanes that have incorporated SB A320-92-1007 at its original issue, or Revisions 1, 2, 3, 4, 5, 6 or 7, prior to the effective date of this Amendment, comply with the requirements of this Directive.
A321 aeroplanes that have incorporated SB A320-92-1007 at its original issue, or Revisions 6, prior to the effective date of this Amendment, comply with the requirements of this Directive.
Note: DGAC AD F-2004-044 R1 (EASA approval 2004-8065) and AD F-2004-129
(EASA approval 2004-8058) refer.
Compliance: Before 5 August 2005.
This Amendment becomes effective on 30 September 2004.
Background: The original issue of this Directive required modification of wiring route to improve the segregation between the low voltage wire bundles of the FQIS and the high voltage wire bundles of the GPCU in accordance with SB A320-92-1007, original issue or Revisions 1,2 or 3. These actions were intended to prevent injection of 115 volt alternating current (VAC) into 28 volt direct current (VDC) wire bundles, which could damage fuel tank equipment.
Amendment 1 followed the issue of a revised DGAC Directive and contained minor amendments giving credit for incorporation of later issues of service bulletins.
Amendment 2 follows the issue of a revised DGAC Directive and contains clarification of credit given for incorporation of earlier service bulletins.
Airbus Industrie A319, A320 and A321 Series Aeroplanes
AD/A320/127 Amdt 2 (continued)
Amendment 1 of this Airworthiness Directive became effective on 5 August 2004.
The original issue of this Airworthiness Directive became effective on 4 October 2001.
Gary J Carr
Delegate of the Civil Aviation Safety Authority 13 August 2004
The above AD is notified in the Commonwealth of Australia Gazette on 8 September 2004.
Overview
The Civil Aviation Safety Authority (CASA) has enacted Airworthiness Directive AD/A320/127 Amendment 2 to address safety concerns related to the wiring of Airbus Industrie A319, A320, and A321 series aeroplanes. This directive was introduced to rectify the unsafe condition identified in the fuel quantity indication system wiring, specifically to ensure proper segregation between low voltage and high voltage wire bundles to prevent potential damage to fuel tank equipment. The directive revokes the previous Amendment 1 and incorporates further clarifications regarding credit for earlier service bulletins. The policy objective is to enhance the safety and airworthiness of these aircraft by mandating specific modifications to the wiring system. This directive applies to A319, A320, and A321 series aeroplanes that have not already incorporated certain service bulletins, and compliance is required before 5 August 2005.
Scope and Application
The Airworthiness Directive (AD) AD/A320/127 Amdt 2 pertains specifically to Airbus Industrie A319, A320, and A321 series aeroplanes, excluding those that have incorporated Airbus Industrie Modification 28289 during production or Airbus Industrie Service Bulletin (SB) A320-92-1007 Revision 8 while in service. This directive is issued under subregulation 39.1 (1) of the Civil Aviation Safety Regulations 1998 (CASR 1998) by a delegate of the Civil Aviation Safety Authority (CASA). The AD mandates the installation of additional protective conduits and new supports to ensure the physical segregation between the low voltage wire bundles of the fuel quantity indicating system (FQIS) and the high voltage wire bundles of the ground power control unit (GPCU), in line with Airbus Service Bulletin A320-92-1007 Revision 8 or a later revision approved by the DGAC. Compliance with these requirements must be achieved before 5 August 2005. This AD applies nationally across Australia, aligning with the jurisdictional reach of the Commonwealth, and extends to any entity or person operating the specified models of Airbus aeroplanes within the country, unless they have already implemented the specified modifications or service bulletins.
Key Provisions
The Airworthiness Directive (AD) AD/A320/127 Amdt 2 primarily applies to Airbus Industrie A319, A320, and A321 series aeroplanes, except those on which Airbus Industrie Modification 28289 has been embodied during production or Airbus Industrie Service Bulletin (SB) A320-92-1007 Revision 8 has been incorporated whilst in service (Applicability). The requirement of this AD mandates that additional protective conduits and new supports be installed to ensure physical route segregation between the low voltage wire bundles of the fuel quantity indicating system (FQIS) and the high voltage wire bundles of the ground power control unit (GPCU). This installation must be in accordance with Airbus Service Bulletin A320-92-1007 Revision 8 or later revisions approved by the DGAC (Requirement). Specifically, A319 and A320 aeroplanes that have incorporated SB A320-92-1007 at its original issue, or Revisions 1, 2, 3, 4, 5, 6 or 7, prior to the effective date of this Amendment, comply with the requirements of this Directive. For A321 aeroplanes, incorporation of SB A320-92-1007 at its original issue, or Revisions 6, prior to the effective date of this Amendment, also satisfies the requirements. The compliance deadline for these modifications is set for before 5 August 2005 (Compliance).
The AD imposes obligations on the owners and operators of A319, A320, and A321 series aeroplanes to ensure that the specified modifications are carried out in accordance with the instructions and within the stipulated timeframe. This includes ensuring that the necessary protective conduits and supports are installed to prevent the risk of 115 volt alternating current (VAC) being injected into 28 volt direct current (VDC) wire bundles, which could potentially damage fuel tank equipment. Operators must verify that the aircraft falls within the applicability criteria and that any previous incorporations of relevant service bulletins are noted and compliant. Documentation of the modifications carried out must be maintained in the aircraft's records.
Breaches of this Airworthiness Directive could result in significant safety risks, leading to potential grounding of the aircraft until the required modifications are made. While specific penalties are not detailed in the AD itself, non-compliance with such directives typically falls under broader aviation safety regulations, which can include substantial fines, operational restrictions, or other enforcement actions by the Civil Aviation Safety Authority (CASA). The severity of penalties could vary based on the extent of non-compliance and the risk posed to air safety.