AD/DHA-3/4 - Fuel Tank Vent - Modification

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Legislation au F2006B08987 Not 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

 


DHA-3 (Drover) Series Aeroplanes

 

AD/DHA-3/4 Fuel Tank Vent - Modification 11/52

Applicability: All models.

 

Document: 1. DH Mod. DRO 37; or

 

2. DH TNS CT(A3) No. 48; or 3. ANO 105.1.14.14.5.5

Compliance: Forthwith.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, address the overarching need for stringent safety standards in civil aviation. The regulations encompass a wide array of safety directives, with one notable example being the Airworthiness Directives (ADs) which mandate specific actions to ensure aircraft safety. The AD/DHA-3/4 pertains to a modification of the fuel tank vent in Drover Series Aeroplanes, aiming to mitigate risks associated with fuel tank flammability and safety. This directive, issued under the authority of the Civil Aviation Safety Authority, seeks to ensure compliance forthwith, thereby maintaining high safety standards in civil aviation operations. The policy objective of these regulations is to protect the public by ensuring that aircraft meet rigorous safety standards, thus minimising the risk of accidents and incidents.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39, Section 105, applies to all Drover Series aeroplanes, as outlined in Airworthiness Directive DHA-3/4, which mandates modifications to the fuel tank vent. This regulation applies to all models of the specified aircraft and requires compliance with modifications as detailed in DH Mod. DRO 37, DH TNS CT(A3) No. 48, or ANO 105.1.14.14.5.5. The directive necessitates immediate compliance, ensuring that all relevant modifications are implemented forthwith. The applicability of these regulations is nationwide, extending across the Commonwealth of Australia, thereby affecting all operators and entities involved in the maintenance and operation of the specified Drover Series aeroplanes. The scope of this legislation is precise, targeting specific structural modifications to enhance safety, without explicitly detailing exclusions or thresholds in the provided text. However, it is understood that the regulation may be extended or further defined through subordinate instruments or subsequent amendments.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, detail the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives for various aircraft. Section 39-105 AD/DHA-3/4 pertains to a crucial modification on the fuel tank vent for all models of DHA-3 (Drover) Series Aeroplanes. This directive requires immediate compliance with modifications detailed in documents such as DH Mod. DRO 37, DH TNS CT(A3) No. 48, and ANO 105.1.14.14.5.5. The primary objective of this regulation is to ensure that the fuel tank vent system of the affected aircraft is modified to meet specified safety standards, which are essential to prevent potential hazards related to fuel tank flammability and venting. Under these regulations, all owners and operators of the DHA-3 (Drover) Series Aeroplanes are obligated to adhere to the modifications outlined in the specified documents. This includes conducting the necessary inspections, identifying any non-compliant parts, and ensuring that the modifications are carried out by appropriately certified personnel. The compliance directive, highlighted as "forthwith," mandates that these modifications be completed without undue delay, underscoring the urgency and importance of these safety measures. Failure to comply with these airworthiness directives can lead to severe consequences, including the grounding of the aircraft until the required modifications are verified and approved by CASA. The Civil Aviation Regulations 1998 impose strict obligations on aircraft owners and operators to maintain their aircraft in a safe and airworthy condition. Section 39-105 AD/DHA-3/4 specifically mandates the timely implementation of the specified modifications to the fuel tank vent system. This includes keeping detailed records of the modifications, ensuring that they are conducted according to the approved documentation, and maintaining a log of all inspections and maintenance activities related to this directive. Non-compliance with these obligations can result in penalties, including fines and potential criminal charges for those responsible for the oversight. In terms of consequences for non-compliance, the Civil Aviation Regulations 1998 outline both civil and potential criminal penalties. For civil infractions, offenders may face fines and administrative sanctions. However, in more severe cases, non-compliance can lead to criminal charges, which may result in substantial fines and imprisonment. The specific penalties depend on the severity and frequency of the violations, but the regulations aim to ensure that all modifications and safety standards are strictly adhered to. CASA has the authority to enforce these regulations and may take action against individuals or entities that fail to comply with the stipulated safety 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.