AD/ECUREUIL/5 - Tail Rotor Control Fixed Plate - Inspection of Self Aligning Bearing

Overview

The Civil Aviation Regulations 1998, as amended by the legislative instrument F2006B09355, address the critical need for regular inspections of the tail rotor control fixed plate and self-aligning bearing in Eurocopter AS 350 (Ecureuil) series helicopters. Enacted by the Commonwealth of Australia, this regulation is aimed at ensuring air safety by mandating inspections to prevent any misalignment or wear in the tail rotor control system, which could compromise flight safety. The policy objective behind these regulations is to maintain the airworthiness of these helicopters by ensuring that the components critical to flight control are regularly inspected and maintained according to the specified intervals. Compliance with these directives is essential to uphold the stringent safety standards set forth by the Civil Aviation Safety Authority.

Scope and Application

The Civil Aviation Safety Authority's Schedule of Airworthiness Directives, specifically AD/ECUREUIL/5 concerning the Eurocopter AS 350 (Ecureuil) Series Helicopters, applies to all AS.350 models that have not been modified in accordance with AMS 350A.07.6513 and AMS 350A.07.8515. This directive mandates regular inspections of the tail rotor control self-aligning bearing to ensure it is correctly located in the bore of the fixed plate. Compliance with this directive is required at intervals not exceeding 50 hours of time in service, as detailed in the AS.350 Service Bulletin 05.01. This regulation is applicable across the Commonwealth of Australia and is enforced by the Civil Aviation Safety Authority under the Civil Aviation Regulations 1998. No specific exclusions or exemptions are mentioned in the directive, implying that it applies broadly to all relevant aircraft within the specified parameters. The authority to extend or restrict the application of this directive through subordinate instruments is implicitly acknowledged within the broader regulatory framework of the Civil Aviation Regulations.

Key Provisions

The Civil Aviation Regulations 1998, specifically in PART 39 - 105, mandate certain safety directives for the operation of Eurocopter AS 350 (Ecureuil) Series Helicopters. Under section AD/ECUREUIL/5, these regulations direct that all model AS.350 helicopters, which have not been modified in accordance with AMS 350A.07.6513 and AMS 350A.07.8515, must undergo regular inspections of the tail rotor control fixed plate's self-aligning bearing. This directive is crucial to ensure the bearing is correctly positioned within the bore of the fixed plate, a requirement set forth in section 8/79 of the regulations. These inspections are mandated to occur at intervals not exceeding 50 hours of time in service, as stipulated in the document AS.350 SB 05.01. The Civil Aviation Safety Authority (CASA) enforces this regulation to ensure that all operators of these helicopters adhere to the specified safety standards. Operators must ensure that these inspections are carried out meticulously and documented accurately to comply with the regulatory requirements. Failure to adhere to these guidelines can result in significant safety risks and potential non-compliance with aviation safety standards. The obligations imposed by these regulations on the parties involved, primarily helicopter operators, include conducting regular inspections and maintaining detailed records of these inspections. Operators must ensure that the tail rotor control fixed plate's self-aligning bearing is correctly located, as per the directive in AS.350 SB 05.01. This requirement is integral to the maintenance and safety protocols that govern the operation of the AS 350 helicopters. The documentation of each inspection must be thorough, providing clear evidence of compliance with the mandated intervals and specifications. Failure to comply with the provisions of these regulations can result in serious consequences. According to the Civil Aviation Regulations 1998, non-compliance with airworthiness directives can lead to civil penalties, including fines and potential grounding of the aircraft. Additionally, the operators may face criminal charges if the non-compliance is deemed to have caused or contributed to an aviation accident or incident. The maximum penalties for such breaches can be significant, reflecting the importance of adhering to these safety directives to ensure the safety of all persons on board and the integrity of the aviation system.