AD/SC7/26 Amdt 2 - Wing Attachment Bushes in Fuselage Front and Rear Spar Frames

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Legislation au F2006B06800 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Short SC7 (Skyvan) Series Aeroplanes

 

AD/SC7/26

Amdt 2


Wing Attachment Bushes in Fuselage Front and Rear Spar Frames


9/99

 

Applicability: All model SC7 aircraft.

 

Requirement: Inspect in accordance with Shorts Mandatory Service Bulletin 53-68 Revision 3.

 

Note: UK CAA AD 009-01-96 refers.

 

Compliance: Unless the initial inspection is already accomplished, inspect within 50 flights after 31 December 1998, and thereafter at the intervals specified in the Requirement Document.

 

The initial compliance of the previous issue of this Directive remains unchanged. This Amendment becomes effective on 9 September 1999.

Background: Reports were received of bush migration in the fuselage rear spar frame. This Directive requires bushes in the front and rear spars to be inspected, and where necessary, oversize bushes to be installed. Amendment 1 introduced changes to the repeat inspection interval times.

 

Amendment 2 is issued in response to a revision of the Requirement Document which amends the text for repeat inspection requirements.

 

Amendment 1 of this Airworthiness Directive became effective on 31 December 1998.

 

The original issue of this Airworthiness Directive became effective on 10 October 1996.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, a fundamental piece of legislation in Australia, address the critical issue of ensuring the safety of civil aviation. Enacted by the Commonwealth of Australia, these regulations serve to establish stringent standards and directives that govern the operation and maintenance of aircraft within Australian airspace. One such directive is found in Part 39 - 105, which deals specifically with the Civil Aviation Safety Authority's Schedule of Airworthiness Directives. This regulatory framework aims to mitigate aviation risks by imposing mandatory safety measures and periodic inspections on aircraft models, such as the Short SC7 (Skyvan) Series Aeroplanes. The directive in question, AD/SC7/26, addresses the issue of bush migration in the fuselage rear spar frame of these aircraft. This amendment mandates inspections in accordance with the latest revisions of the Requirement Document, ensuring that any identified issues are promptly addressed to maintain airworthiness. The objective of these regulations is to enhance aviation safety by setting clear, enforceable standards that must be adhered to by all operators and maintainers of civil aircraft within Australia.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes the Airworthiness Directive AD/SC7/26 Amendment 2, which pertains to the inspection of wing attachment bushes in the fuselage front and rear spar frames of all model SC7 aircraft. This regulatory directive applies directly to the aviation industry, particularly to the operators and maintainers of SC7 (Skyvan) series aeroplanes within the Commonwealth of Australia. The directive mandates compliance with the Shorts Mandatory Service Bulletin 53-68 Revision 3 and references the UK Civil Aviation Authority AD 009-01-96. The geographic scope of this regulation is national, encompassing all aircraft registered and operated in Australia. There are no stated exclusions or exemptions within this directive, and it extends its application through subordinate amendments, such as Amendment 2, which refines the repeat inspection interval times in response to updates in the Requirement Document. Operators must ensure that the initial inspection is carried out within 50 flights following 31 December 1998, and subsequent inspections must adhere to the specified intervals detailed in the Requirement Document.

Key Provisions

The Civil Aviation Regulations 1998, particularly Part 39 - 105, mandate adherence to Airworthiness Directives issued by the Civil Aviation Safety Authority. Under this regulatory framework, Short SC7 (Skyvan) series aeroplanes are subject to specific directives aimed at maintaining their airworthiness. One such directive, AD/SC7/26 Amendment 2, pertains to the inspection of wing attachment bushes in the fuselage front and rear spar frames (Section 39 - 105). This directive applies to all model SC7 aircraft and requires inspections to be conducted in accordance with Shorts Mandatory Service Bulletin 53-68 Revision 3 (Section 39 - 105). The directive stipulates that unless an initial inspection has already been carried out, the inspection must be completed within 50 flights after 31 December 1998, and subsequently at intervals specified in the Requirement Document (Section 39 - 105). The Amendment 2, which became effective on 9 September 1999, introduces changes to the repeat inspection intervals, aligning with a revision of the Requirement Document (Section 39 - 105). This reflects a response to reports of bush migration in the fuselage rear spar frame, necessitating rigorous inspections to ensure safety and compliance. Entities governed by this Act, including operators and maintenance personnel of SC7 aircraft, must adhere to the outlined inspection schedules and procedures. This includes conducting inspections in line with the specified bulletin and installing oversize bushes where necessary (Section 39 - 105). Operators must ensure that the initial compliance with the previous issue of this Directive remains unchanged, and must implement the new inspection intervals as per the Amendment (Section 39 - 105). Failure to comply with these mandates can lead to significant safety risks, potentially resulting in aircraft being deemed unairworthy. Failure to comply with the directives set forth in the Civil Aviation Regulations 1998 can result in serious consequences. Civil and criminal penalties may be imposed for non-compliance, with the potential for fines and imprisonment depending on the severity of the breach. The exact penalties are determined by the nature and extent of the violation, but the regulations provide a clear framework for enforcement to ensure the highest standards of aviation safety are maintained (Section 39 - 105).

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Area of Law
Aviation Law
Instrument
Regulation
Concepts
Definitions & Interpretation
Compliance Obligations
Enforcement Powers
Catchwords
Airworthiness Directives

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.