COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
General Electric Turbine Engines - CT58 Series
AD/CT58/10 Accessory Drive Gearbox - Pinion Gear Bolt Torque 9/85
Applicability: CT58-140-1 engines, S/N 295012 to 295185. All CT58-140-2 engines, S/N 296001 to 296026. All Accessory drive gearboxes P/N 5001T90G01 and G02 fitted to CT58- 100-2, 110-1, 110-2, 140-1 Series A and 140-1 Series L engines. All accessory drive gearboxes P/No 5001T90G01 and G02 stocked as spares.
Document: General Electric SB (CT58) A72-147; or
AD/GE-T/30.
Compliance: As detailed in the requirement document.
Overview
The Civil Aviation Regulations 1998, amended by F2006B08668, address the safety concerns related to the accessory drive gearbox pinion gear bolts in specific General Electric CT58 series turbine engines. Enacted by the Australian Government, this legislation was introduced to ensure the airworthiness of the mentioned engine models, aiming to prevent mechanical failures that could compromise flight safety. The Civil Aviation Safety Authority (CASA) mandates these Airworthiness Directives to mitigate potential risks associated with the accessory drive gearbox pinion gear bolts not being properly torqued, thus maintaining the integrity and reliability of the aircraft's engine systems. The overarching policy objective is to uphold stringent safety standards within the aviation industry, protecting both passengers and crew by ensuring that all regulated aircraft components meet necessary safety requirements.
Scope and Application
The Civil Aviation Safety Authority Schedule of Airworthiness Directives under the Civil Aviation Regulations 1998 pertains to specific models of General Electric Turbine Engines, namely the CT58 Series, focusing on accessory drive gearbox pinion gear bolt torque. This legislation applies to all CT58-140-1 engines with serial numbers ranging from 295012 to 295185, all CT58-140-2 engines with serial numbers ranging from 296001 to 296026, and all accessory drive gearboxes with part numbers 5001T90G01 and G02 fitted to various CT58 engine series, as well as those stocked as spares. The directive is designed to ensure compliance with specific technical standards as outlined in the referenced General Electric Service Bulletin or AD/GE-T/30. This regulation has a national scope, applying across all states and territories within the Commonwealth of Australia, governing the maintenance and operational standards of the specified engines and gearboxes within civil aviation. There are no stated exclusions or exemptions within the text of this directive, implying a broad application to the specified components and serial numbers. The implementation and enforcement of this directive may be further extended or restricted through subordinate instruments, which can provide additional details or clarifications on compliance requirements.
Key Provisions
The Civil Aviation Regulations 1998 (Cth), under Part 39 - 106, include specific provisions for the airworthiness of aircraft engines. In particular, the regulation AD/CT58/10 addresses the accessory drive gearbox pinion gear bolt torque for certain General Electric CT58 Series turbine engines (sections 39-106). This regulation applies to CT58-140-1 engines with serial numbers (S/N) 295012 to 295185, all CT58-140-2 engines with S/N 296001 to 296026, and all accessory drive gearboxes P/N 5001T90G01 and G02 fitted to specified CT58 engine series and stocked as spares. The compliance requirements for these engines are outlined in General Electric Service Bulletin (SB) (CT58) A72-147 or AD/GE-T/30.
The Act imposes several obligations on the parties involved, including aircraft owners, operators, and maintenance personnel. Owners and operators of aircraft equipped with the specified CT58 engines must ensure that the accessory drive gearbox pinion gear bolt torque is within the specified limits as outlined in the compliance documents. This includes conducting necessary inspections and maintenance actions to meet these specifications. Maintenance personnel must be adequately trained and authorised to perform the required tasks, ensuring that all maintenance and inspections are conducted in accordance with the prescribed procedures and standards.
Failure to comply with the provisions of AD/CT58/10 can lead to significant legal and operational consequences. The Civil Aviation Safety Authority (CASA) may take enforcement action against non-compliant aircraft, which can include grounding the aircraft until the required actions are taken. In terms of penalties, while the specific penalties are not detailed in the excerpt, regulatory non-compliance in aviation can generally result in fines, operational restrictions, and potential criminal charges for serious breaches, which could lead to imprisonment. The exact penalties would depend on the severity and frequency of the non-compliance, as well as any resulting harm or risk to aviation safety.