COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
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/SD3-60/42 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.
Short SD3-60 Series Aeroplanes
AD/SD3-60/42
Amdt 1
Shock Absorber Gland Nut 9/2004
Applicability: All Model SD3-60 aircraft with main landing gear (MLG) shock absorber units as defined in Messier-Dowty Service Bulletin No. 32-78SD Revision 1 or Revision 2.
Requirement: Action in accordance with Shorts Mandatory Service Bulletin SD360-32-34 Revision 1, dated 30 June 2003, or Revision 2, dated 18 May 2004.
Note 1: Incorporation of Messier-Dowty Service Bulletin 32-80SD constitutes terminating action for the inspection requirements of this Directive.
Note 2: UK CAA AD 010-09-95 refers.
Compliance: As specified in the Requirement document.
This Amendment becomes effective on 2 September 2004.
Background: A report was received of a cracked MLG shock absorber gland nut. The crack occurred as a result of corrosion around the inner shoulder radius of the nut.
Amendment 1 is issued in response to revisions of the Requirement document, which introduce repeat inspections of the shock absorber gland nut.
The original issue of this Airworthiness Directive became effective on 31 January 1996.
David Villiers
Delegate of the Civil Aviation Safety Authority 21 July 2004
The above AD is notified in the Commonwealth of Australia Gazette on 11 August 2004.
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Overview
The Civil Aviation Safety Regulations 1998, which are administered by the Civil Aviation Safety Authority (CASA), serve to maintain and enhance the safety of civil aviation in Australia. This legislative instrument, enacted by the Australian Parliament, aims to ensure that all aspects of civil aviation operations, including the maintenance and safety of aircraft, comply with stringent safety standards. The objective of the Civil Aviation Safety Regulations is to mitigate risks associated with civil aviation activities by setting forth detailed requirements for airworthiness, licensing, and operational safety. Specifically, the regulations are designed to address gaps in safety protocols and ensure that all aircraft and aeronautical products meet the necessary safety standards before and during operation.
This legislative instrument introduces an Airworthiness Directive (AD) concerning the SD3-60 series of aircraft, focusing on the main landing gear (MLG) shock absorber units. The AD mandates specific maintenance actions to address a safety concern related to the corrosion of the MLG shock absorber gland nut, which was identified as a potential risk factor. The AD, issued under subregulation 39.1 (1) of the CASR 1998, requires compliance with the latest revisions of the Requirement document, which includes repeat inspections of the shock absorber gland nut as per the specified service bulletins. This directive ensures that all relevant aircraft operators take necessary corrective actions to maintain the airworthiness of their aircraft, thereby enhancing overall aviation safety.
Scope and Application
The Civil Aviation Safety Regulations 1998, as amended, apply to all aircraft and aeronautical products operating within the Australian jurisdiction, overseen by the Civil Aviation Safety Authority (CASA). This particular Airworthiness Directive, AD/SD3-60/42 Amendment 1, is specifically targeted at all Model SD3-60 aircraft equipped with main landing gear (MLG) shock absorber units as defined in the referenced Messier-Dowty Service Bulletins. The directive mandates adherence to the requirements stipulated in Shorts Mandatory Service Bulletin SD360-32-34 Revision 1 or 2, dated 30 June 2003 and 18 May 2004 respectively, which pertain to the inspection and maintenance of the MLG shock absorber gland nut. The directive is designed to address and rectify the identified unsafe condition of cracked MLG shock absorber gland nuts due to corrosion, ensuring continued airworthiness of the affected aircraft. This AD revokes the previous directive, AD/SD3-60/42, and takes effect on the date specified, with compliance timing outlined in the directive itself. The directive applies nationally across Australia, and its scope is limited to the specified aircraft models and components.
Key Provisions
The main operative sections of this Airworthiness Directive (AD) are Section 39.1, which outlines the process for issuing ADs, and the sections detailing the applicability, requirement, and compliance for the specific AD/SD3-60/42 Amendment 1. Section 39.1(1) of the Civil Aviation Safety Regulations 1998 (CASR 1998) allows the Civil Aviation Safety Authority (CASA) delegate to issue an AD when necessary to correct an unsafe condition. The AD/SD3-60/42 Amendment 1 applies to all Model SD3-60 aircraft with main landing gear (MLG) shock absorber units, as defined in Messier-Dowty Service Bulletin No. 32-78SD Revision 1 or Revision 2. The requirement section mandates action in accordance with Shorts Mandatory Service Bulletin SD360-32-34 Revision 1, dated 30 June 2003, or Revision 2, dated 18 May 2004. Compliance with this AD is to be achieved as specified in the requirement document, and the amendment becomes effective on 2 September 2004.
The AD imposes obligations on the relevant parties, including aircraft operators and maintenance organisations, to comply with the specified actions for correcting the unsafe condition. These actions include inspecting and replacing the MLG shock absorber gland nut if necessary, following the guidelines provided in the Shorts Mandatory Service Bulletin SD360-32-34. The AD also requires operators to ensure that any corrective action is completed within the timeframe specified in the compliance section, which is in accordance with the requirements document.
Failure to comply with the AD may result in various consequences. Under CASR 1998, non-compliance with an AD can lead to civil and criminal penalties. Civil penalties may include fines, while criminal penalties may include imprisonment or both, depending on the severity of the non-compliance. The exact penalties for non-compliance are not specified in the AD but are governed by the general provisions of CASR 1998 and other relevant legislation. CASA may take enforcement action against non-compliant aircraft, operators, or maintenance organisations, which could include grounding the aircraft, imposing fines, or pursuing legal action. Additionally, failure to comply with the AD may compromise the airworthiness of the aircraft, potentially leading to accidents or incidents that could endanger lives and property.