AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/SD3-60/53 Amdt 3 and issues the following AD under subregulation 39.1 (1) of CAR 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 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/SD3-60/53
Amdt 4
Engine Mounting Tubes and Fittings 3/2003
Applicability: All SD3-60 aircraft that have not yet complied with Shorts Service Bulletin (SB) SD330- 71-18 or which are currently required to perform the 6 month repeat inspections in accordance with SB SD330-71-18 original issue, Revision 1, Revision 2, or Revision 3.
Note: All aircraft that have complied with a previous issue of this Directive and determined that no corrosion exists, or have replaced all corroded engine tube sub- assemblies in accordance with Part B of a previous Requirement document, are not required to comply with Amendment 4 of this Directive.
Requirement: Action in accordance with Shorts Service Bulletin SD360-71-20 or SD360-71-20 Revision
Note: The Requirement document covers information contained in Service Information Letter 203, which will be cancelled.
Compliance: Unless in compliance with the previous issue of this Directive, accomplish before 31 May 2003 or at the next required repeat inspection in accordance with SB SD330-71-18 original issue, Revision 1, Revision 2, or Revision 3; whichever occurs first.
This Amendment becomes effective on 20 March 2003.
Background: The manufacturer received reports of corrosion on the internal surface of the engine mounting tubes, tube end fittings, taper pins, and also on the foot fittings.
Amendment 1 corrected fastener information in accomplishment instructions. Amendment 2 corrected ambiguities and errors in the Requirement document.
Amendment 3 introduced a new Requirement document which superseded SB SD360-71- 18 at all issues.
Short SD3-60 Series Aeroplanes
AD/SD3-60/53 Amdt 4 (Continued)
Amendment 4 is issued in response to a revision of the Requirement document which provides additional information on inspection for damage to the taper pin holes and installation of the taper pins.
Amendment 3 of this Airworthiness Directive became effective on 28 November 2002. Amendment 2 of this Airworthiness Directive became effective on 23 March 2000.
Amendment 1 of this Airworthiness Directive became effective on 22 April 1999.
The original issue of this Airworthiness Directive became effective on 25 March 1999.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 31 January 2003
The above AD is notified in the Commonwealth of Australia Gazette on 26 February 2003.
Overview
The Airworthiness Directive issued under the Civil Aviation Act 1988, specifically section 39.1, addresses safety concerns regarding the corrosion of engine mounting tubes and fittings in SD3-60 series aeroplanes. Enacted by the Civil Aviation Safety Authority (CASA), the purpose of this legislation is to ensure the safety of aircraft operations by mandating specific maintenance actions to mitigate identified safety risks. The policy objective is to correct the unsafe condition related to the corrosion of engine mounting components, thereby enhancing the overall airworthiness of the aircraft. This legislative instrument, AD/SD3-60/53 Amdt 4, aims to ensure that all affected aircraft comply with the specified maintenance requirements to maintain safety standards in line with the CASA's regulatory framework.
Scope and Application
The Airworthiness Directive (AD) AD/SD3-60/53 Amdt 4 applies to all SD3-60 aircraft that have not yet complied with Shorts Service Bulletin (SB) SD330-71-18 or are currently required to perform the six-month repeat inspections as outlined in the original issue or any of its revisions. This legislation pertains specifically to addressing the identified issue of corrosion on the internal surface of the engine mounting tubes, tube end fittings, taper pins, and foot fittings of the affected aircraft. The AD applies within the Commonwealth of Australia, as indicated by its notification in the Commonwealth of Australia Gazette, thereby establishing its jurisdictional reach. The directive does not apply to aircraft that have already complied with a previous issue of this directive and determined that no corrosion exists, or those that have replaced all corroded engine tube sub-assemblies in accordance with Part B of a previous requirement document. The AD mandates compliance with the actions specified in Shorts Service Bulletin SD360-71-20 or SD360-71-20 Revision, with the compliance deadline set as either before 31 May 2003 or at the next required repeat inspection, whichever comes first. This directive is effective as of 20 March 2003 and is subject to amendments, as evidenced by the previous amendments that corrected various aspects of the requirement document and accomplishment instructions.
Key Provisions
The Airworthiness Directive (AD) AD/SD3-60/53 Amdt 4, issued by the Civil Aviation Safety Authority (CASA) delegate, revokes the previous amendment and introduces new requirements for SD3-60 series aircraft. Specifically, the directive applies to all SD3-60 aircraft that have not yet complied with Shorts Service Bulletin (SB) SD330-71-18 or are required to perform the 6-month repeat inspections in accordance with the original, Revision 1, Revision 2, or Revision 3 of SB SD330-71-18 (paragraph 1). Aircraft that have previously complied with a previous issue of this directive and found no corrosion, or have replaced all corroded engine tube sub-assemblies in accordance with a previous requirement document, are exempt from this directive (paragraph 2).
The directive mandates that affected aircraft must take action in accordance with Shorts Service Bulletin SD360-71-20 or SD360-71-20 Revision (paragraph 3). This requirement document includes information previously contained in Service Information Letter 203, which is to be cancelled. Compliance with the directive must be achieved before 31 May 2003 or at the next required repeat inspection in accordance with SB SD330-71-18, whichever occurs first (paragraph 4). This amendment becomes effective on 20 March 2003 (paragraph 5). The directive responds to reports of corrosion on the internal surface of the engine mounting tubes, tube end fittings, taper pins, and foot fittings, with previous amendments correcting information and ambiguities in the directive (paragraph 6).
The AD imposes several obligations on the parties it governs. Firstly, aircraft owners and operators must ensure that their SD3-60 series aircraft are inspected and maintained in accordance with the requirements outlined in SB SD360-71-20 or its revisions (paragraph 3). This includes performing the necessary inspections and repairs to address any corrosion found on the engine mounting tubes, tube end fittings, taper pins, and foot fittings (paragraph 6). Secondly, aircraft maintenance personnel must follow the instructions provided in the requirement document to ensure compliance with the directive (paragraph 3). Lastly, aircraft owners and operators must complete the required actions before the specified deadline, which is either 31 May 2003 or the next required repeat inspection, whichever comes first (paragraph 4).
Failure to comply with the AD may result in civil or criminal penalties. Under the Civil Aviation Act 1988, non-compliance with ADs is an offence, and the penalties can include fines of up to $126,000 for individuals and $630,000 for corporations (subsection 327(1)). Additionally, CASA may issue enforcement notices or take legal action against aircraft owners and operators who fail to comply with the directive. Furthermore, non-compliance with ADs can also result in the grounding of affected aircraft, which can have significant operational and financial consequences for aircraft owners and operators (paragraph 4).