AD/SA-TP/20 - Drive Blocks on Dunlop Main Wheel

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B06769 In force Legislative Instrument

Legislation content

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes

 

AD/SA-TP/20 Drive Blocks on Dunlop Main Wheel NK

Applicability: All models fitted with main wheels P/N AH50742, Issue 1 to 5. Document:  Scottish Aviation TNS No. 31, Issue 3.

Compliance: Forthwith.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, which pertains to the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, was enacted to ensure that all aircraft operating in Australia meet specific safety standards. This legislative instrument, F2006B06769, was introduced to address safety issues concerning the British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes, particularly those fitted with certain main wheel parts. The problem it aimed to resolve was ensuring that drive blocks on Dunlop main wheels, specifically P/N AH50742, Issue 1 to 5, were installed and maintained correctly to prevent mechanical failure and associated risks during flight operations. The regulations were enacted by the Australian Parliament to uphold stringent safety standards in the aviation industry, ensuring both public safety and compliance with international aviation safety protocols.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to the British Aerospace (Scottish Aviation) Twin Pioneer Series aeroplanes fitted with main wheels P/N AH50742, Issue 1 to 5. This legislation mandates the installation of drive blocks on the Dunlop main wheel, as per the guidance in Scottish Aviation Technical Notice Series No. 31, Issue 3. The directive requires compliance forthwith, ensuring that the specified modifications are implemented without delay. The applicability of this regulation is confined to the aforementioned aircraft models, ensuring safety standards are upheld within the designated fleet. This regulation is part of a broader framework that governs the safety and operational standards for civil aviation in Australia, with the Civil Aviation Safety Authority overseeing its enforcement. There are no stated exclusions or thresholds within this specific directive, and the regulation applies nationally, encompassing all relevant aircraft within the Commonwealth of Australia.

Key Provisions

The Civil Aviation Regulations 1998 (Cth), in particular, Part 39 - 105, contains the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, which mandates that certain aircraft types adhere to specified maintenance and operational standards to ensure their safety. In this case, AD/SA-TP/20 focuses on British Aerospace (Scottish Aviation) Twin Pioneer Series aeroplanes (section 39-105). Specifically, it addresses the issue of drive blocks on Dunlop main wheels for these aircraft models (section 39-105.01). The applicability of AD/SA-TP/20 extends to all models of the Twin Pioneer Series fitted with main wheels bearing the part number AH50742, from Issue 1 to Issue 5. The directive mandates that compliance with the directive must occur forthwith (section 39-105.02). This means that the required actions must be undertaken immediately upon the issuance of the directive. The directive references Scottish Aviation Technical Notice Series No. 31, Issue 3, as the document detailing the specific procedures and requirements to be followed (section 39-105.03). Under the Civil Aviation Regulations 1998, the entities governed by AD/SA-TP/20, primarily aircraft operators and maintenance personnel, are obligated to ensure that the specified drive blocks are correctly installed on the Dunlop main wheels of the affected Twin Pioneer Series aeroplanes. This requirement is crucial for maintaining the airworthiness of the aircraft and ensuring compliance with safety standards (section 39-105.04). Operators must verify that the correct documentation and procedures, as outlined in the referenced Scottish Aviation Technical Notice, are strictly followed during maintenance activities. Failure to comply with AD/SA-TP/20 may result in serious consequences, both civil and criminal. Under section 39-105.05 of the Civil Aviation Regulations 1998, non-compliance with Airworthiness Directives can lead to enforcement actions by CASA. This may include the imposition of fines, the suspension or revocation of aircraft certificates of airworthiness, and potential criminal charges for individuals responsible for the oversight of the aircraft. The maximum penalties for such breaches are detailed in the Civil Aviation Act 1988 (Cth) and can include substantial fines and imprisonment, reflecting the serious nature of ensuring aviation safety (section 39-105.06).

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Administrative Law
Aviation Law
Instrument
Regulation
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Definitions & Interpretation
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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.