AD/Y12/10 - Flap Motoreducer

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Legislation au F2006B07615 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

 


AIRWORTHINESS DIRECTIVE


For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 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.

 

Harbin Y12 Series Aeroplanes

 

AD/Y12/10 Flap Motoreducer 3/2003

 

Applicability:  Y12 aeroplanes listed in Harbin Aircraft Manufacturing Corporation Service Bulletin (SB) Y12-27-0035 dated 3 August 1992.

 

Requirement: If not previously accomplished, modify the flap motoreducer and its installation in accordance with SB Y12-27-0035.

 

This modification should be incorporated in conjunction with the modification to the central control pedestal, SB Y12-76-0036 and AD/Y12/9 refers.

 

Note: China CAAC AD CAD92-Y012-03 Amdt 39-0810 refers.

 

Compliance: Before 30 June 2003.

 

This Airworthiness Directive becomes effective on 20 March 2003.

 

Background: This Directive requires the installation of a new, safer and more reliable flap motoreducer system.


 

James Coyne

Delegate of the Civil Aviation Safety Authority 3 February 2003

 

 

 

 

 

 

 

 

 

 

 

 


The above AD is notified in the Commonwealth of Australia Gazette on 26 February 2003.

 

 


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Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the need for maintaining airworthiness of aircraft within Australia. Enacted by the Parliament of Australia, these regulations aim to ensure the safety of civil aviation by providing detailed requirements for the maintenance, repair, and operation of aircraft. The Civil Aviation Safety Authority (CASA) plays a pivotal role in enforcing these regulations and ensuring compliance through the issuance of Airworthiness Directives (ADs), which are designed to correct any unsafe conditions identified in aircraft or aeronautical products. One such AD, AD/Y12/10, pertains to the modification of the flap motoreducer in Harbin Y12 Series Aeroplanes, as highlighted in Harbin Aircraft Manufacturing Corporation Service Bulletin (SB) Y12-27-0035 dated 3 August 1992. This directive was introduced to enhance the safety and reliability of the flap motoreducer system, and it became effective on 20 March 2003, requiring compliance by 30 June 2003. The overarching policy objective of these regulations is to maintain the highest safety standards in the civil aviation sector.

Scope and Application

The Airworthiness Directive (AD) outlined in the Civil Aviation Regulations 1998 (CAR 1998) applies specifically to the Harbin Y12 Series aeroplanes listed in Harbin Aircraft Manufacturing Corporation Service Bulletin (SB) Y12-27-0035 dated 3 August 1992. The AD mandates the modification of the flap motoreducer and its installation in accordance with the specified service bulletin, ensuring that this modification is performed in conjunction with the central control pedestal modification referenced in SB Y12-76-0036 and AD/Y12/9. This directive is necessary to address an unsafe condition and must be completed before 30 June 2003. The directive is effective from 20 March 2003, and its purpose is to install a new, safer, and more reliable flap motoreducer system, as required by the Civil Aviation Safety Authority (CASA) delegate. The AD is issued under subregulation 39.1 (1) of CAR 1998, which provides the legal basis for such directives to ensure the ongoing airworthiness of aircraft within the Commonwealth of Australia.

Key Provisions

The Airworthiness Directive (AD) issued under the Civil Aviation Regulations 1998 (CAR 1998) sets out specific requirements and compliance timelines for the maintenance and modification of certain aircraft. Specifically, AD/Y12/10 pertains to the Harbin Y12 Series Aeroplanes and mandates modifications to the flap motoreducer as specified in Harbin Aircraft Manufacturing Corporation Service Bulletin (SB) Y12-27-0035 dated 3 August 1992 (section 3/2003). This directive applies to all Y12 aeroplanes listed in the bulletin and requires that the flap motoreducer be modified and its installation updated in accordance with the specified service bulletin. Furthermore, this modification must be carried out in conjunction with the modification to the central control pedestal, as detailed in SB Y12-76-0036 and referenced in AD/Y12/9. Operators and owners of the affected Harbin Y12 aeroplanes must ensure that the modifications outlined in the AD are completed before the specified compliance date, which is 30 June 2003. This involves following the instructions provided in SB Y12-27-0035 to ensure the installation of a new, safer, and more reliable flap motoreducer system. It is also noted that this directive references China CAAC AD CAD92-Y012-03 Amdt 39-0810, indicating a cross-reference to an international safety directive. Failure to comply with the requirements of this Airworthiness Directive can result in severe consequences. The AD stipulates that non-compliance is a breach of the Civil Aviation Regulations 1998, which can lead to enforcement actions by the Civil Aviation Safety Authority (CASA). Penalties for non-compliance may include fines, legal action, and potentially grounding the affected aircraft until the required modifications are completed. The specific penalties for non-compliance are not detailed within the AD but are generally governed by the broader provisions of the CAR 1998, which can include substantial financial penalties and legal repercussions for operators and owners who fail to adhere to the mandated 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.