COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), 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/GAF N22/75 and issues the following 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.
GAF N22 and N24 Series Aeroplanes
AD/GAF-N22/75
Amdt 1
Horizontal Stabiliser Access Panel Intercostal Angles and Upper and Lower Skins
10/2001
Applicability: Model N22 and N24 aircraft with line sequence numbers listed in the Requirement document.
Requirement: Inspect in accordance with ASTA Nomad Service Bulletin NMD-55-34 Revision 1. Compliance: At the next 100 hour inspection after 18 July 1996 or before 12 September 1996,
whichever occurs first. Thereafter at intervals not to exceed 100 hours time in service or 12 calendar months, whichever occurs first.
The compliance times of the original issue of this Directive remain unchanged by this issue.
This amendment becomes effective on 4 October 2001.
Background: Reports were received by the manufacturer of cracking of the horizontal stabiliser upper and lower skin, at the ends of the horizontal stabiliser access hole intercostal angles and in the horizontal stabiliser trailing edge channel.
Amendment 1 introduces a revision of the Requirement document, which was issued to provide for replacing rivets with screws in the access panels and to clarify figures.
The original issue of this Airworthiness Directive became effective on 18 July 1996.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 22 August 2001
The above AD is notified in the Commonwealth of Australia Gazette on 12 September 2001.
Overview
The Civil Aviation Safety Regulations 1998, enacted by the Commonwealth of Australia, are designed to maintain and enhance the safety standards in civil aviation, addressing the need for a robust regulatory framework that ensures the safety of aircraft and aeronautical products. This legislative instrument was introduced to provide a comprehensive set of rules and directives that the Civil Aviation Safety Authority (CASA) can implement to mitigate safety risks associated with civil aviation operations. CASA, acting under the authority granted by these regulations, issues airworthiness directives such as AD/GAF-N22/75 Amendment 1, which specifically addresses identified safety concerns in certain aircraft models. The policy objective of these regulations is to mandate actions that prevent unsafe conditions from materialising, thus protecting the public and maintaining the integrity of the aviation industry.
Scope and Application
The Airworthiness Directive (AD) AD/GAF-N22/75 Amendment 1, issued under the Civil Aviation Safety Regulations 1998, applies to specific models of GAF N22 and N24 series aeroplanes, particularly those with line sequence numbers detailed in the requirement document. The AD mandates inspections to address and rectify unsafe conditions identified in the horizontal stabiliser access panel intercostal angles and the upper and lower skins of the aircraft. The inspections must be conducted in accordance with ASTA Nomad Service Bulletin NMD-55-34 Revision 1 and are to be performed at specific intervals: initially at the next 100-hour inspection following 18 July 1996 or before 12 September 1996, and subsequently at intervals not exceeding 100 hours in service or 12 calendar months, whichever occurs first. This legislative instrument, which forms part of the Commonwealth of Australia's regulatory framework, is enforced by the Civil Aviation Safety Authority (CASA) and its delegates, and it remains effective as notified in the Commonwealth of Australia Gazette on 12 September 2001.
Key Provisions
The Civil Aviation Safety Regulations 1998, as amended, contain several sections relevant to the Airworthiness Directive (AD) AD/GAF-N22/75 Amendment 1. Section 39.1(1) of the Civil Aviation Regulations 1998 (CAR 1998) allows the Civil Aviation Safety Authority (CASA) to issue ADs to ensure aircraft safety. The AD in question applies specifically to GAF N22 and N24 Series Aeroplanes with particular line sequence numbers, as outlined in the Requirement document. This AD mandates an inspection process in accordance with ASTA Nomad Service Bulletin NMD-55-34 Revision 1, which involves examining the horizontal stabiliser access panel intercostal angles and the upper and lower skins for any signs of cracking or other unsafe conditions.
The AD imposes clear obligations on the operators and owners of the specified aircraft models. They must ensure that the required inspections are conducted meticulously and in accordance with the detailed instructions provided in the ASTA Nomad Service Bulletin NMD-55-34 Revision 1. The inspections must occur at specific intervals: at the next 100-hour inspection following 18 July 1996 or before 12 September 1996, whichever is earlier. Subsequent inspections should be conducted at intervals not exceeding 100 hours in service or 12 calendar months, whichever occurs first. This ensures that any potential safety issues are identified and addressed promptly.
Failure to comply with the provisions of the AD may result in serious safety risks. While the AD itself does not explicitly outline specific offences, penalties, or consequences for non-compliance, non-adherence to ADs can lead to enforcement actions under the Civil Aviation Act 1988 and the Civil Aviation Regulations 1988. These can include fines, enforcement notices, and potential grounding of the aircraft until compliance is achieved. The seriousness of non-compliance can also lead to more severe civil or criminal penalties if the failure to comply results in an accident or incident. Therefore, operators and owners must strictly adhere to the AD to avoid any legal repercussions.