AD/CT58/9 - Anti-Icing Valve

Overview

The Civil Aviation Regulations 1998, amended by the Legislative Instrument F2006B08684, address the need for specific safety directives concerning the maintenance and operational standards of turbine engines used in aviation. This particular instrument pertains to General Electric's CT58 Series turbine engines, introducing Airworthiness Directives to ensure these engines meet necessary safety standards. The directive was introduced by the Australian Government through the Civil Aviation Safety Authority, aiming to mitigate risks associated with engine anti-icing valves. The policy objective is to maintain the highest safety standards in civil aviation by enforcing regular inspections and modifications of these components to prevent operational failures. The legislation mandates compliance with the specified requirements outlined in the General Electric Service Bulletin (GE SB) CT58 A75-22 or AD/GE-T/22, ensuring that anti-icing valves are inspected within 100 hours of service after 31 August 1972 and at intervals not exceeding 200 hours thereafter, unless the valves have been modified in accordance with GE SB (CT58) 75-23. This directive is crucial in maintaining the operational integrity and safety of the CT58 Series engines in Australian civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 106, applies to all CT58-100-1, 100-2, 110-1, 110-2, 140-1 and 140-2 Series turbine engines fitted with anti-icing valves, with the exception of those valves that have been modified in accordance with General Electric Service Bulletin (SB) (CT58) 75-23. This regulation is part of the broader framework established by the Civil Aviation Safety Authority (CASA) and is applicable nationally across Australia, impacting the aviation industry by setting mandatory safety directives for the specified turbine engines. Compliance with these directives is critical and requires adherence to the specified timeframes, necessitating action within 100 hours of time in service after 31 August 1972 and subsequently at intervals not exceeding 200 hours of time in service unless the valves have been modified to GE SB (CT58) 75-23. This regulation is instrumental in ensuring the safe operation of aircraft utilising the specified engines.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 106, addresses the Civil Aviation Safety Authority's Schedule of Airworthiness Directives for General Electric Turbine Engines of the CT58 Series, with a focus on the Anti-Icing Valve (AD/CT58/9 9/85). This directive applies to all CT58-100-1, 100-2, 110-1, 110-2, 140-1 and 140-2 Series engines fitted with anti-icing valves, except those modified to GE SB (CT58) 75-23. The requirement document for compliance is General Electric SB (CT58) A75-22 or AD/GE-T/22. The compliance directive mandates that the specified engines must adhere to the compliance timeline set within 100 hours of time in service following 31 August 1972 and then at intervals not exceeding 200 hours of time in service unless otherwise modified. The obligations imposed by this legislation on the entities governed include ensuring that the CT58 Series engines meet the specified compliance timelines and adhere to the technical standards outlined in the General Electric SB (CT58) A75-22 or AD/GE-T/22 documents. This involves maintaining and updating the anti-icing valve systems as per the directives to ensure continued airworthiness and safety. Engine operators and maintenance providers must ensure that the engines are inspected and serviced according to the prescribed intervals, or modified to the specified standard, to avoid non-compliance. Failure to comply with these airworthiness directives can result in serious consequences. While the Civil Aviation Regulations 1998 do not explicitly state the offences or penalties in the excerpt provided, non-compliance with airworthiness directives typically results in severe civil and criminal penalties under Australian aviation law. These can include hefty fines, suspension or revocation of airworthiness certificates, and potential criminal charges for those responsible for the oversight of the aircraft or engines. The exact penalties would be determined in accordance with the broader provisions of the Civil Aviation Act 1988 and associated regulations, which can include fines up to $330,000 for corporations and imprisonment for individuals.