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 39.1 (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.
British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes
AD/HS 748/32 Port and Starboard Wing Dry Bays Electrical
Looms and Fuel Cross-Feed Drains
6/2003
Applicability: All HS.748 series aeroplanes.
Requirement: 1. Remove the fuel cross-feed drain stub pipe assemblies, together with the drain valve securing brackets, in the port and starboard wing dry bays and install a blanking caps on the fuel cross-feed pipe stubs in accordance with the Accomplishment Instructions of BAe Systems Service Bulletin (SB) HS 748-28- 045 dated 12 February 2003.
2. Inspect the electrical cable looms in the port and starboard wing dry bays for chafe damage in accordance with the Accomplishment Instructions SB HS 748- 28-045 and, if necessary, replace any damaged electrical wires, secure the loom and ensure that the looms are protected.
Note: SB HS 748-28-045 has been classified as Mandatory by the CAA(UK).
Compliance: For Requirement 1 - Before 12 February 2004.
For Requirement 2 - Before further flight immediately following accomplishment of Requirement 1.
This Airworthiness Directive becomes effective on 12 June 2003.
Background: BAe Systems have received a report from an ATP operator of a fire in the dry bay area of the wing, which was attributed to chafing damage between electrical cables and the fuel cross- feed drain stub pipe assembly.
British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes
AD/HS 748/32 (continued)
As this may also occur in HS 748 series aeroplanes, this Directive requires the removal of the fuel cross- feed drain stub pipe assemblies, inspection of the electrical looms and, if necessary, rectification action.
Jim Coyne
Delegate of the Civil Aviation Safety Authority 28 April 2003
The above AD is notified in the Commonwealth of Australia Gazette on 21 May 2003.
Overview
The Airworthiness Directive (AD) for the British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes, specifically AD/HS 748/32, was issued by the Civil Aviation Safety Authority (CASA) on 28 April 2003, and it became effective on 12 June 2003. This AD was enacted in response to a reported fire in the dry bay area of an aeroplane wing, attributed to chafing damage between electrical cables and the fuel cross-feed drain stub pipe assembly, as reported by an ATP operator. The primary objective of this AD is to address the identified unsafe conditions in the HS 748 series aeroplanes by requiring the removal of certain fuel cross-feed drain stub pipe assemblies and the inspection and, if necessary, replacement of damaged electrical wires in the port and starboard wing dry bays. This action is intended to prevent similar incidents from occurring in the future and ensure the continued airworthiness of these aircraft.
Scope and Application
The Airworthiness Directive (AD) issued under the Civil Aviation Safety Regulations 1998 applies specifically to all British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes, a type of aircraft used within the Australian jurisdiction. The directive mandates that operators of these aircraft remove the fuel cross-feed drain stub pipe assemblies and install blanking caps on the fuel cross-feed pipe stubs in accordance with British Aerospace (BAe) Systems Service Bulletin HS 748-28-045. Additionally, operators are required to inspect the electrical cable looms in the port and starboard wing dry bays for chafe damage and replace any damaged wires as necessary, ensuring that the looms are protected. These requirements must be completed by specific deadlines: the removal and installation of the blanking caps must be carried out before 12 February 2004, while the inspection and necessary repairs of the electrical cable looms must be completed before further flight immediately following the accomplishment of the first requirement. This AD extends its reach nationally, as it is notified in the Commonwealth of Australia Gazette, ensuring compliance across all operators within the Australian jurisdiction.
Key Provisions
The Airworthiness Directive (AD) F2006B10568 outlines specific requirements and actions for the British Aerospace (Hawker Siddeley) HS 748 series aeroplanes to ensure their safety. Under section (a) of the applicability, all HS 748 series aeroplanes are subject to this directive. The requirements set out in section 1 mandate the removal of the fuel cross-feed drain stub pipe assemblies and drain valve securing brackets in the port and starboard wing dry bays, followed by the installation of blanking caps on the fuel cross-feed pipe stubs. This action must be carried out in accordance with the Accomplishment Instructions provided in BAe Systems Service Bulletin (SB) HS 748-28-045 dated 12 February 2003. Additionally, section 2 requires inspecting the electrical cable looms in the port and starboard wing dry bays for chafe damage and replacing any damaged wires, securing the looms, and ensuring they are properly protected. This inspection and any necessary repairs must be completed before further flight immediately after the accomplishment of requirement 1.
Entities governed by this directive, including operators and maintenance providers of HS 748 series aeroplanes, have specific obligations. They must ensure that the actions outlined in the AD are carried out strictly in accordance with the instructions provided in the BAe Systems Service Bulletin. Compliance with these requirements is crucial to maintaining the airworthiness of the aircraft and preventing potential safety hazards. The directive stipulates a compliance timeline: Requirement 1 must be completed before 12 February 2004, and Requirement 2 must be accomplished before further flight immediately following the completion of Requirement 1. Failure to adhere to these timelines and instructions could result in non-compliance with aviation safety regulations.
Failure to comply with the AD can lead to serious consequences. The AD imposes significant obligations on the operators and maintenance providers, and non-compliance can result in civil or criminal penalties. The specific consequences for non-compliance are not detailed in the AD itself, but under general aviation regulations, penalties can include fines, suspension or revocation of operating certificates, and potential criminal charges for serious violations. The exact penalties depend on the severity and nature of the breach and are determined by the Civil Aviation Safety Authority (CASA). Ensuring adherence to the AD is critical to avoid these potential legal and safety repercussions.