AD/CESSNA 400/62 Amdt 1 - Main Landing Gear Tyre Clearance - Inspection and Modification

Overview

The Civil Aviation Regulations 1998, which are part of a broader legislative framework under the Civil Aviation Act 1988, were enacted to establish and regulate standards for the safety of civil aviation in Australia. This legislation was introduced to address the need for comprehensive regulation of airworthiness and safety standards across the aviation industry. The Civil Aviation Safety Authority (CASA), as the enforcing body, plays a critical role in ensuring compliance with these regulations, thereby safeguarding public safety. The policy objective of these regulations is to maintain and enhance the safety of civil aviation operations within Australia by imposing stringent requirements on aircraft manufacturers, operators, and maintenance providers. One specific area of focus within the Civil Aviation Regulations is the issuance of Airworthiness Directives (ADs) to address safety concerns related to specific aircraft models. The ADs are designed to ensure that identified safety issues are rectified to maintain the airworthiness of aircraft. For instance, AD/CESSNA 400/62 Amendment 1 pertains to Cessna 400 series aeroplanes, specifically targeting issues related to insufficient clearance between the main landing gear (MLG) tyre and the wheel-well in certain model 404 aircraft. This amendment references the Cessna Customer Care Service Information Letter (SIL) No. ME80-21 to outline the necessary compliance measures, thereby ensuring that affected aircraft meet the required safety standards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Civil Aviation Safety Authority’s schedule of airworthiness directives, with this particular amendment (AD/CESSNA 400/62 Amdt 1) addressing the main landing gear tyre clearance of Cessna 400 series aeroplanes. This directive applies to all models 404 with specific serial numbers ranging from 404-0001 to 404-0624, as well as the individual serial numbers 404-0626, 404-0627, and 404-0629. The directive mandates inspection and potential modification to ensure that there is sufficient clearance between the main landing gear tyre and the wheel-well, as insufficient clearance could pose a significant safety risk. Compliance with this directive is to be carried out in accordance with the requirements outlined in the referenced document, Cessna Customer Care SIL No. ME80-21. This regulatory measure extends to all entities operating these specific models within the Commonwealth of Australia, ensuring adherence to the stipulated safety standards to maintain airworthiness and safety in civil aviation.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 and the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives for Cessna 400 Series Aeroplanes, detail a critical safety requirement. Section AD/CESSNA 400/62 Amendment 1 pertains to the main landing gear tyre clearance, focusing on inspection and modification for certain models of the Cessna 404 series aeroplanes (section AD/CESSNA 400/62 Amdt 1). The directive applies to all models 404 with specific serial numbers ranging from 404-0001 to 404-0624, 404-0626, 404-0627, and 404-0629 (section Applicability). The requirement document referenced is Cessna Customer Care SIL No. ME80-21, which outlines the necessary compliance measures. The obligations imposed by this directive are quite specific. Owners and operators of the affected Cessna 404 series aeroplanes must ensure that the main landing gear tyre clearance is inspected as per the guidance provided in SIL No. ME80-21. This inspection is crucial to identify any instances of insufficient clearance between the main landing gear tyre and the wheel-well. If such instances are found, the required modifications must be undertaken to rectify the issue, ensuring the aeroplane's continued airworthiness and compliance with safety standards. Failure to comply with the requirements set forth in this directive can lead to significant consequences. Non-compliance could potentially result in the aeroplane being deemed unairworthy, which could lead to grounding and legal penalties. While the specific penalties are not detailed in the provided text, non-compliance with CASA directives generally carries the risk of enforcement actions, including fines and potential criminal charges. The seriousness of these consequences underscores the importance of adhering to the directive to ensure the safety and airworthiness of the affected aircraft.