AD/BELL 212/28 Amdt 2 - Vertical Fin Forward Spar

Overview

The Civil Aviation Regulations 1998, as amended by the Civil Aviation Amendment (Enhancing Aviation Safety) Regulations 2006, establish a comprehensive framework for ensuring the safety and efficiency of civil aviation in Australia. This legislation is instrumental in addressing the problem of ensuring that aircraft are maintained to the highest safety standards. The Australian Parliament enacted these regulations to provide a robust legislative foundation that governs the operation of aircraft within Australian airspace. One of the key policy objectives is to mandate rigorous safety measures to prevent accidents and incidents that could endanger passengers and crew. This includes the issuance of Airworthiness Directives, such as the AD/BELL 212/28 Amendment 2, which specifically addresses the inspection and modification requirements for the vertical fin forward spar of Bell 212 helicopters to mitigate risks associated with undersized or cracked spar caps. This legislative instrument focuses on enhancing the safety of Bell Helicopter Textron 212 series helicopters by requiring inspections of specific parts of the vertical fin forward spar to ensure their integrity and compliance with safety standards. The directive applies to all Bell 212 helicopters equipped with certain parts numbers of spar caps and mandates regular inspections to prevent structural failures. The compliance measures outlined in the directive are designed to ensure that any identified issues are rectified promptly, thereby maintaining the airworthiness of the aircraft and protecting all persons on board.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandates the application of the Airworthiness Directive concerning Bell Helicopter Textron 212 Series Helicopters, as outlined in AD/BELL 212/28 Amendment 2. This directive applies to all Bell 212 helicopters equipped with specific part numbers, namely P/N 212-030-447-001 or -101, for the vertical fin forward spar. The directive imposes a requirement for the inspection of certain spar caps within these helicopters, specifically the -001 spar caps and those -101 caps that are less than 0.190 inches thick, measured according to the methodology specified in Bell ASB 212-86-38. This inspection must be performed using the method detailed in Bell Technical Bulletin 212-81-50 Part 1. Compliance with this directive necessitates that inspections be conducted at intervals not exceeding 120 hours of component time in service. However, if certain modifications are implemented, such as the installation of a doubler in accordance with Part III of Bell Technical Bulletin 212-81-50 or the installation of a new spar cap P/N 212-030-447-101 as per Bell ASB 212-86-38, the need for inspection may be obviated. This directive extends its application nationally, affecting all entities operating Bell 212 helicopters within Australia.

Key Provisions

The Civil Aviation Regulations 1998, specifically in Part 39 - 105, under the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives, address the safety and maintenance of Bell Helicopter Textron 212 Series Helicopters. The regulations require that all Bell 212 helicopters with specific part numbers in the vertical fin forward spar (s/n 212-030-447-001 or -101) undergo thorough inspections (AD/BELL 212/28 Amendment 2). According to this directive, inspections must be conducted on all -001 spar caps and those -101 spar caps that measure less than 0.190 inches thick. This inspection must follow the method described in Bell Technical Bulletin 212-81-50 Part 1, as outlined in Bell ASB 212-86-38. The inspections are mandated to occur at intervals not exceeding 120 hours of component time in service. However, inspections are deemed unnecessary if the specified modifications have been made, such as the installation of a doubler as per Part III of Bell Technical Bulletin 212-81-50, or the installation of a new spar cap P/N 212-030-447-101 with a thickness of not less than 0.190 inches or reinforcement in accordance with Part II of Bell ASB 212-86-38. The obligations imposed by this legislation are clear and specific. Operators and maintainers of Bell 212 helicopters must ensure that the inspections are conducted at the specified intervals and that any identified issues are addressed through the recommended modifications. The modifications must be performed according to the guidelines provided in the referenced technical bulletins and airworthiness service bulletins. This requirement aims to maintain the structural integrity of the helicopters and prevent potential failures that could lead to safety incidents. Additionally, any changes to the airworthiness directives must be communicated and implemented to ensure compliance with the regulations. Failure to comply with the airworthiness directives may result in civil or criminal penalties. The regulations stipulate that non-compliance can lead to significant consequences, although specific penalties are not outlined in the provided text. However, it is reasonable to infer that penalties could include fines, suspension of airworthiness certificates, or other enforcement actions as prescribed by the Civil Aviation Act 1988 and the Civil Aviation Regulations 1998. The enforcement of these regulations is crucial to uphold the safety standards set by CASA and to protect the public and aviation personnel from potential hazards.