AD/DHC-1/29 Amdt 2 - Tailplane Attachment Fittings

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


AIRWORTHINESS DIRECTIVE


For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/DHC-1/29 Amdt 1 and issues the following AD under subregulation 39.1 (1) of CASR 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 or aeronautical product 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.


 

De Havilland DHC-1 (Chipmunk) Series Aeroplanes

 

AD/DHC-1/29

Amdt 2


Tailplane Attachment Fittings 13/2003

 

 

Applicability: All DHC-1 aircraft.

 

Requirement: Action in accordance with British Aerospace Technical News Sheet CT (C1) No.176 Issue 2.

 

Note: UK CAA AD 014-11-97 refers.

 

Compliance: As specified in the Requirement document.

 

This Amendment becomes effective on 25 December 2003.

 

Background: The tailplane attachment fittings are lifed items, but in most cases the history of the installed fittings was not known. This Directive required an inspection within 3 months, then replacement of all fittings with C1.TP.313 fittings within 15 months. A TNS amendment dated 28 May 1986 increased the fitting life from 6240 hours to 9984 hours.

 

Amendment 2 is issued to update the Requirement document to the current issue.


David Villiers

Delegate of the Civil Aviation Safety Authority 12 November 2003

 

 

 

 

 

 

 

 

 

 

The above AD is notified in the Commonwealth of Australia Gazette on 3 December 2003.

 

 


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Overview

The Civil Aviation Safety Regulations 1998 (CASR) were enacted to establish a comprehensive regulatory framework governing civil aviation safety in Australia. This legislation is administered by the Civil Aviation Safety Authority (CASA) and aims to ensure that civil aviation operations are conducted with the highest standards of safety. One significant aspect of the CASR is Part 39, which includes Airworthiness Directives (ADs) designed to address specific safety issues in aircraft. These directives mandate corrective actions to rectify unsafe conditions and ensure compliance with safety standards. The introduction of ADs, such as the one targeting the tailplane attachment fittings of De Havilland DHC-1 (Chipmunk) Series Aeroplanes, demonstrates the regulatory body’s commitment to proactively managing and mitigating safety risks in aviation. The policy objective is to maintain and enhance the safety of civil aviation by addressing potential hazards through timely and effective regulatory measures.

Scope and Application

The Civil Aviation Safety Regulations 1998, specifically PART 39 - 105, sets out Airworthiness Directives (ADs) that apply to all DHC-1 aircraft within the Commonwealth of Australia. These directives are issued by a delegate of the Civil Aviation Safety Authority (CASA) and serve to address unsafe conditions that may affect the airworthiness of the specified aircraft. In the case of the De Havilland DHC-1 (Chipmunk) Series Aeroplanes, the AD mandates that the action specified in the requirement section must be followed, as per the instructions in British Aerospace Technical News Sheet CT (C1) No.176 Issue 2, with the compliance time frames clearly outlined. The AD, which was updated and amended on 25 December 2003, aims to rectify potential issues with the tailplane attachment fittings, ensuring these are replaced within a stipulated period. The AD is applicable to all DHC-1 aircraft, and its scope and application extend to all relevant aircraft within the Australian jurisdiction. Any exclusions, exemptions, or thresholds are detailed within the requirement section of the AD, and the directive was published in the Commonwealth of Australia Gazette on 3 December 2003.

Key Provisions

The main sections of the Airworthiness Directive (AD) AD/DHC-1/29 Amdt 2 focus on the applicability, requirement, and compliance timelines for De Havilland DHC-1 (Chipmunk) Series Aeroplanes. This AD applies to all DHC-1 aircraft (Applicability section). The requirement mandates that actions must be taken according to the instructions outlined in British Aerospace Technical News Sheet CT (C1) No.176 Issue 2, which includes an inspection within 3 months followed by the replacement of all tailplane attachment fittings with C1.TP.313 fittings within 15 months (Requirement section). Compliance with these directives must be achieved as specified in the Requirement document, with the amendment becoming effective on 25 December 2003 (Compliance section). This Act imposes several obligations on the parties involved, primarily the aircraft operators and owners of DHC-1 aircraft. They must ensure that all tailplane attachment fittings are inspected within 3 months of the AD’s effective date and replaced with the specified C1.TP.313 fittings within 15 months. Failure to comply with these requirements could result in the aircraft being deemed non-airworthy, leading to potential grounding and other regulatory consequences. Operators and owners must also ensure that all actions are documented and that records are kept for verification by the Civil Aviation Safety Authority (CASA). Breach of the provisions outlined in this Airworthiness Directive can lead to significant legal and safety consequences. While the specific civil and criminal penalties for non-compliance are not detailed in the AD itself, CASA has the authority to impose penalties under the Civil Aviation Act 1988 and associated regulations. These penalties may include fines, suspension or revocation of airworthiness certificates, and other enforcement actions. The severity of the penalty may depend on the extent and nature of the non-compliance, as well as any resulting safety risks.

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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.