AD/ECUREUIL/55 Amdt 1 - MGB Suspension Bi-Directional Cross Beam

Overview

The Civil Aviation Regulations 1998, established by the Australian Parliament, provide a comprehensive framework for regulating civil aviation in Australia. One aspect of these regulations is Part 39, which includes Airworthiness Directives aimed at ensuring the safety of aircraft. The Eurocopter AS 350 (Ecureuil) Series Helicopters AD/ECUREUIL/55 Amendment 1, issued by the Civil Aviation Safety Authority, specifically addresses the issue of cracks in the MGB suspension bi-directional cross beam of certain AS 350 models. The directive mandates compliance with the manufacturer's Service Bulletin, ensuring the safety of these helicopters through timely inspections and necessary repairs. The policy objective behind this directive is to mitigate the risk of structural failure and enhance overall aviation safety by responding to specific in-service issues. The Eurocopter AS 350 (Ecureuil) Series Helicopters AD/ECUREUIL/55 Amendment 1, effective from 14 August 1997, was introduced in response to an in-service report of a crack in the MGB suspension cross beam. This amendment aims to ensure that affected helicopters are inspected and repaired to prevent potential safety hazards. The directive applies to specific versions of the AS 350 series equipped with certain cross beam assemblies. Compliance with the directive is mandatory, requiring action within a specified timeframe to maintain the airworthiness of these helicopters. The directive's implementation is a direct response to identified safety concerns, reinforcing the commitment to maintaining high safety standards in civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, as outlined in Part 39 - 105, applies to all Eurocopter AS 350 (Ecureuil) Series Helicopters specifically those versions B, BA, B1, B2, and D, equipped with the MGB suspension bi-directional cross beam P/N 350A38.1018, across all dash numbers, and complete cross beam assemblies P/N 350A38.0210, also across all dash numbers, excluding modified assemblies with Mod No. 072720. The legislation mandates compliance with EUROCOPTER FRANCE Service Bulletin No. 05.00.28, as referenced by DGAC AD 96-156-071(B)R1. The requirement necessitates action within 30 hours of time in service following 4 September 1996, and thereafter in accordance with the specified requirement document. This directive was initially issued effective from 4 September 1996 and has remained unchanged in its compliance stipulations, with Amendment 1 altering the applicability to exclude certain modified assemblies and referencing the manufacturer's Service Bulletin. This regulation is enforced by the Civil Aviation Safety Authority and is applicable throughout the Commonwealth of Australia.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, contain provisions related to the airworthiness directives for certain aircraft models. One such directive, AD/ECUREUIL/55 Amendment 1, pertains to the Eurocopter AS 350 (Ecureuil) series helicopters, specifically those fitted with the MGB suspension bi-directional cross beam. Section 1 of the directive details the applicability, which includes AS 350 models B, BA, B1, B2, and D equipped with the specified cross beam parts numbers, excluding those with modification number 072720. The requirement under Section 2 mandates that actions be taken in accordance with EUROCOPTER FRANCE Service Bulletin No 05.00.28, and references a related French civil aviation authority directive, DGAC AD 96-156-071(B)R1. Compliance with this directive must be achieved within 30 hours of the helicopter being in service after 4 September 1996, and subsequently as per the requirement document. The obligations imposed on operators and owners of the affected helicopters under this directive are to ensure that the specified modifications are carried out by a certified repair facility or appropriately qualified personnel. The directive mandates that these modifications be completed within the stipulated timeframe to maintain the airworthiness of the aircraft. It also requires operators to keep accurate records of the compliance actions taken, which may be subject to inspection by the Civil Aviation Safety Authority (CASA). In the event of non-compliance with this airworthiness directive, there may be significant consequences. Section 3 of the regulations could result in penalties for the operators or owners who fail to adhere to the directive’s requirements. Under the Civil Aviation Act 1988, the penalties for non-compliance can include fines up to a substantial amount as determined by the court, depending on the severity and circumstances of the breach. Additionally, continued operation of a non-compliant aircraft can lead to enforcement actions by CASA, potentially resulting in the grounding of the aircraft until the necessary modifications are completed. This underscores the importance of timely compliance to avoid both financial penalties and operational disruptions.