AD/SC7/17 - Outer Flap - Replacement of Lifed Items and Reinforcement of Flap Structure

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Legislation au F2006B06792 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/SC7/17 Outer Flap - Replacement of Lifed Items

and Reinforcement of Flap Structure

Applicability: All Skyvan series 3, 3A and 3M. Document:  Short SB No. 57-62.

Compliance: As detailed in the requirement document.


7/80

 

Background: Retirement of hinge arms and operating arms, and reinforcement of the flap structure, are required as part of the life extension modification and to ensure the continued airworthiness of the flaps.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, as amended through the legislative instrument F2006B06792, address the critical need to ensure the continued airworthiness of specific aircraft models by issuing detailed directives. This particular legislative instrument, introduced by the Commonwealth of Australia, targets the Short SC7 (Skyvan) series aeroplanes, specifically the Skyvan 3, 3A, and 3M models. The problem it was introduced to address involves the necessity of replacing certain lifed items such as hinge arms and operating arms, and reinforcing the flap structure to extend the operational life of these aircraft while maintaining stringent safety standards. The policy objective is to mandate compliance with these requirements to ensure the ongoing safety and reliability of these aircraft in Australian airspace.

Scope and Application

The Civil Aviation Regulations 1998, under the authority of the Commonwealth of Australia and specifically as outlined in PART 39 - 105, mandate the application of Airworthiness Directives for ensuring the safety and continued operational viability of aircraft within Australia’s jurisdiction. This particular directive, AD/SC7/17, pertains to Short SC7 (Skyvan) series aeroplanes, namely the Skyvan series 3, 3A, and 3M models, and applies to the replacement of lifed items and reinforcement of the flap structure. The directive is designed to address the retirement of hinge arms and operating arms, and to ensure the structural integrity of the flaps, thereby maintaining the airworthiness of these aircraft. Compliance with this directive is mandatory and must be executed in accordance with the detailed requirements outlined in Short SB No. 57-62. This regulation is integral to ensuring that these specific aircraft models meet the safety standards set forth by the Civil Aviation Safety Authority. The geographic and jurisdictional scope of this legislation is national, as it is governed under the Commonwealth of Australia's Civil Aviation Regulations 1998. This means that the directive applies to all Skyvan series 3, 3A, and 3M aeroplanes operating within Australia, irrespective of their location or ownership. There are no stated exclusions, exemptions, or specific thresholds within the directive itself; however, it is noted that the directive extends its application through subordinate instruments such as Short SB No. 57-62, which provides detailed compliance requirements. The directive ensures that all relevant entities, including aircraft operators and maintenance providers, adhere to the specified modifications to maintain the continued safety and airworthiness of the aircraft.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, which sets forth requirements to ensure aircraft safety and airworthiness. For Skyvan series 3, 3A, and 3M aeroplanes, AD/SC7/17 mandates the replacement of lifed items and reinforcement of the flap structure (Section 7/80). This directive is intended to address the retirement of hinge arms and operating arms, and to ensure the continued airworthiness of the flaps, as detailed in Short SB No. 57-62. Under these regulations, the entities governed by the Civil Aviation Act 1988, including aircraft owners, operators, and maintenance providers, have specific obligations. They must adhere to the requirements outlined in AD/SC7/17 by replacing the specified lifed items and reinforcing the flap structure as per the detailed instructions in Short SB No. 57-62. This involves a thorough inspection, replacement of worn components, and structural reinforcement to ensure the continued safety and airworthiness of the aeroplanes. Failure to comply with the airworthiness directives can result in serious consequences. Under the Civil Aviation Act 1988, non-compliance with these directives can lead to enforcement actions by CASA. These actions may include fines, suspension or revocation of airworthiness certificates, and other regulatory penalties. The seriousness of the infraction can lead to substantial penalties, with fines potentially reaching up to $222,200 for corporations and $44,440 for individuals, as prescribed by the Act. Additionally, continued non-compliance or failure to address the mandated modifications can result in the grounding of the affected aircraft, thereby impacting the operator's ability to conduct flights. It is imperative for all stakeholders to understand and adhere to these directives to maintain the high safety standards required by Australian civil aviation regulations. Ensuring compliance not only safeguards the aircraft's airworthiness but also protects the lives of passengers, crew, and the general public. By meticulously following the outlined requirements and staying abreast of any updates or changes to the directives, all parties can contribute to the safe operation of Skyvan series aeroplanes.

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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.