AD/BELL 212/26 Amdt 1 - Hydraulic Servo Cylinder Assembly - Spanner Link Assembly Inspection and Rework

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, which pertains to the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, addresses various safety concerns for aircraft in Australia. One such directive, AD/BELL 212/26 Amendment 1, pertains to the inspection and rework of the hydraulic servo cylinder assembly's spanner link assembly for Bell Helicopter Textron 212 Series Helicopters. This directive was enacted to address the issue where the redundant feature of the dual hydraulic servo system could be compromised by interference to the spanner link assembly, potentially leading to safety risks. The Civil Aviation Safety Authority, under the authority of the Australian Parliament, established this regulation to ensure the continued airworthiness of the specified helicopter models, aiming to maintain the highest safety standards in civil aviation. This amendment to the airworthiness directive was made to include additional helicopters within the applicability listing, ensuring comprehensive safety coverage for the specified serial numbers. The objective is to mandate compliance within 100 hours of time in service after the directive's issuance date, 31 October 1982. By doing so, the regulation seeks to mitigate any potential risks associated with the identified safety concern, thereby enhancing overall aviation safety within Australia.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the application of airworthiness directives for aircraft operating in Australia, including the Bell Helicopter Textron 212 Series Helicopters. This particular directive, AD/BELL 212/26 Amendment 1, applies to all model 212 helicopters within specified serial numbers and mandates compliance within 100 hours of time in service following 31 October 1982. The directive pertains to the hydraulic servo cylinder assembly and spanner link assembly inspection and rework, addressing potential issues that could adversely affect the redundant feature of the dual hydraulic servo system. The scope of this directive is limited to the aforementioned helicopter models and serial numbers, ensuring that these aircraft maintain the required safety standards. The directive extends its regulatory reach to all operators and owners of the affected Bell Helicopter Textron 212 Series within Australia, ensuring compliance with civil aviation safety standards set forth by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, outlines various safety directives that ensure the airworthiness of aircraft. Section AD/BELL 212/26 Amendment 1 pertains to the inspection and rework of the hydraulic servo cylinder assembly and the spanner link assembly of Bell Helicopter Textron 212 Series Helicopters. This directive (section 10/82) applies to all model 212 helicopters with specific serial numbers (SN 30502 thru 30925, 30927 thru 30943, 30945, 30953, 30955, 30958, 30964, 32101 thru 32107, and 32109 thru 32112). The directive is documented in Bell 212 Alert SB 212-79-16A, which mandates compliance within 100 hours of time in service after 31 October 1982. Under these regulations, the primary obligation for operators and maintainers is to ensure that the hydraulic servo cylinder assembly and spanner link assembly of the specified Bell Helicopter Textron 212 Series helicopters are inspected and, if necessary, reworked to mitigate any potential interference that could adversely affect the dual hydraulic servo system's redundant feature. This directive aims to enhance the safety and reliability of the aircraft by addressing a known issue that could compromise the integrity of the hydraulic system. Failure to comply with this directive could lead to serious safety implications, as the hydraulic system is crucial for the operation of various flight control mechanisms. Non-compliance is not only a breach of the Civil Aviation Regulations 1998 but also poses a significant risk to the safety of passengers and crew. The regulatory framework does not explicitly outline specific penalties for non-compliance in this section, but it is understood that breaches could result in severe civil or criminal consequences, including fines and potential criminal charges, depending on the severity of the violation and its impact on aviation safety. In summary, the Civil Aviation Regulations 1998 mandate that specified Bell Helicopter Textron 212 Series helicopters undergo inspection and rework of their hydraulic servo cylinder assembly and spanner link assembly within a defined timeframe. Operators must adhere to these requirements to maintain the airworthiness of the aircraft and ensure the safety of all individuals involved in flight operations. Non-compliance could result in significant legal and safety repercussions.