AD/AL 250/21 - Ceco F.C.U. Throttle Shaft and Governor Quadrant and Shaft Assembly - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, serve to regulate various aspects of civil aviation within the country. A significant legislative instrument under these regulations is the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, specifically AD/AL 250/21, which pertains to Allison Turbine Engines - 250 Series. This directive was introduced to address issues related to the airworthiness of certain engine components, ensuring the safety and reliability of civil aviation operations. The problem it was designed to address includes the need for regular inspection and maintenance of the Ceco F.C.U. Throttle Shaft and Governor Quadrant and Shaft Assembly to prevent potential failures that could compromise flight safety. The policy objective is to mandate compliance within 100 hours’ time in service after the directive's issuance, as specified in Allison 250-C20 CEB No. 1033.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 106, applies to all 250-C20 series Allison turbine engines that are fitted with Ceco FCU assemblies before serial number 3AAC2088 and with power turbine governor assemblies before serial numbers 3AAD2364 and 3ACK175. These regulations are applicable within the Commonwealth of Australia and govern the airworthiness directives that must be adhered to by the operators and maintainers of these aircraft engines. The directive is concerned with the inspection of the throttle shaft and governor quadrant and shaft assembly, as detailed in Allison 250-C20 CEB No. 1033, and compliance is required within 100 hours of time in service after 29 March 1974. The regulations do not specify any exclusions or exemptions, and adherence is mandatory for the specified engines. The scope of these regulations can be extended or further detailed through subordinate instruments, such as additional airworthiness directives or operational standards issued by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998 (C1998L02243) under Part 39 - 106 establish critical safety mandates for aviation operations in Australia. Specifically, the Allison Turbine Engines - 250 Series AD/AL 250/21 pertains to the Ceco F.C.U. Throttle Shaft and Governor Quadrant and Shaft Assembly (section 3/74). This directive applies to all 250-C20 series engines equipped with Ceco FCU assemblies before serial number 3AAC2088 and power turbine governor assemblies before serial numbers 3AAD2364 and 3ACK175. The requirement is for these engines to comply with Allison 250-C20 CEB No. 1033 within 100 hours of service time after 29 March 1974. The obligations under this legislation demand that operators and maintainers of the specified Allison 250 series engines ensure that the Ceco F.C.U. Throttle Shaft and Governor Quadrant and Shaft Assembly are inspected and meet the regulatory standards outlined in the referenced Allison 250-C20 CEB No. 1033. This inspection must occur within the stipulated 100 hours’ time in service following the specified date. The primary purpose of this requirement is to ensure the airworthiness and safety of the aircraft by addressing potential issues with the throttle shaft and governor quadrant and shaft assembly. Non-compliance with these regulations can result in serious legal consequences. If an operator or maintainer fails to adhere to the inspection requirements set forth in AD/AL 250/21, they may be subject to enforcement actions by the Civil Aviation Safety Authority (CASA). The potential penalties for non-compliance can include fines, suspension or revocation of airworthiness certificates, and other regulatory sanctions. The exact penalties can vary depending on the severity and frequency of the breach, but the aim is to enforce strict adherence to safety standards to protect the aviation community.