COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes
AD/HS 748/12 Aileron Control Quadrant Assembly Spindle 5/95
Applicability: All HS748 aircraft equipped with P/N 1R4583 or 2R4583 Aileron Control Quadrant Spindle assemblies which do not have Modification 6112 incorporated.
Requirement: 1. Inspect the Aileron Quadrant Assembly to confirm that the spigot is intact. Inspect in accordance with British Aerospace Mandatory Service Bulletin (MSB) 27/75 Revision 1, Para 2 Part A.
2. Modify the Aileron Quadrant Assembly by introducing a steel spigot in accordance with British Aerospace MSB 27/75 Revision 1, Para 2 Part C.
Note: CAA (UK) AD 0089 refers.
Compliance: 1. Inspect in accordance with Requirement 1 before 12000 hours time in service or before 7 May 1995 whichever is the later. Re-inspect at intervals not to exceed 30 days until modified in accordance with Requirement 2.
2. Modify in accordance with Requirement 2 before 12000 hours time in service, or within 750 hours time in service after 27 April 1995, or before 27 October 1995 whichever occurs last.
Aircraft with more than 20000 hours time in service at the effective date of this AD shall be modified within 400 hours time in service or before 31 July 1995 whichever occurs first.
Background: An incident has been reported where the lower spigot of the aileron control quadrant spindle had broken off. This could reduce aileron control.
Overview
The Civil Aviation Regulations 1998, enacted by the Australian Government, serve to regulate civil aviation activities within Australia, ensuring safety and operational standards are met. One specific regulation, F2006B10546, focuses on addressing safety concerns associated with the aileron control quadrant assembly spindle in British Aerospace (Hawker Siddeley) HS 748 series aeroplanes. This legislative instrument responds to an incident where the aileron control spindle's lower spigot broke off, potentially compromising aileron control and thus necessitating stringent safety measures. The requirement mandates inspections and modifications to the aileron control quadrant assembly to ensure the spigot's integrity, with compliance deadlines based on aircraft service hours and specific dates to maintain operational safety.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses airworthiness directives pertaining to certain aircraft, including the British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes. This particular directive, AD/HS 748/12, concerns the Aileron Control Quadrant Assembly Spindle, applying to all HS 748 aircraft equipped with specific part numbers of the Aileron Control Quadrant Spindle assemblies which do not incorporate Modification 6112. The regulation mandates that inspections and modifications must be conducted to ensure the integrity of the spigot within the assembly, referencing British Aerospace Mandatory Service Bulletin (MSB) 27/75 Revision 1. Compliance with these requirements is crucial to prevent incidents such as the one where the spigot broke off, which could potentially compromise aileron control. The directive sets precise timelines for inspections and modifications based on the aircraft's service hours and dates, ensuring that safety measures are adhered to within stipulated periods.
Key Provisions
The Civil Aviation Regulations 1998, specifically in Part 39 - 105, establish the Civil Aviation Safety Authority Schedule of Airworthiness Directives, with a focus on the British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes. Within this framework, AD/HS 748/12 addresses the Aileron Control Quadrant Assembly Spindle. This directive applies to all HS748 aircraft equipped with specific P/N 1R4583 or 2R4583 Aileron Control Quadrant Spindle assemblies that have not yet incorporated Modification 6112.
Under this legislation, there are two primary requirements. Firstly, operators must inspect the Aileron Quadrant Assembly to ensure that the spigot remains intact. This inspection must be conducted in accordance with British Aerospace Mandatory Service Bulletin (MSB) 27/75 Revision 1, Paragraph 2 Part A. Secondly, the Aileron Quadrant Assembly must be modified by introducing a steel spigot, in line with British Aerospace MSB 27/75 Revision 1, Paragraph 2 Part C. This modification is referenced in the CAA (UK) AD 0089.
Compliance with these provisions necessitates specific actions by the operators. For the inspection requirement, it must be completed before the aircraft reaches 12,000 hours of time in service or before 7 May 1995, whichever is later. After the initial inspection, further inspections must be conducted at intervals not exceeding 30 days until the modification is completed. The modification itself must occur before the aircraft accumulates 12,000 hours of time in service, or within 750 hours after 27 April 1995, or before 27 October 1995, whichever comes last. For aircraft that have more than 20,000 hours of time in service at the effective date of this AD, the modification must be completed within 400 hours of time in service or before 31 July 1995, whichever is earlier.
Failure to comply with these requirements may result in legal and safety consequences. The specific offences, penalties, or civil and criminal consequences for breach are not explicitly stated in this directive. However, non-compliance with Civil Aviation Regulations can lead to enforcement actions by the Civil Aviation Safety Authority, which may include fines, operational restrictions, or other regulatory measures to ensure compliance and maintain airworthiness standards.