AD/CA25/8 - Carburettor Heat Modification Number 7/97

Overview

The Civil Aviation Regulations 1998, as amended, provide a comprehensive framework for ensuring the safety and efficiency of civil aviation in Australia. Specifically, Part 39 - 105, which pertains to the Civil Aviation Safety Authority Schedule of Airworthiness Directives, plays a critical role in enforcing safety measures across various aircraft types. One such directive, AD/CA25/8, pertains to Skyfox Aviation (Hedaro) CA25 Series Aeroplanes and mandates the implementation of a carburettor heat modification to address an identified safety issue. This directive was enacted by the Civil Aviation Safety Authority, under the authority granted by the Civil Aviation Act 1988. The primary objective of this directive is to mitigate the risk of excessive RPM drop when carburettor heat is selected in affected aircraft, thereby ensuring the safety of flight operations. Compliance with this directive is mandatory, with a requirement to implement the modification within a specified timeframe following the directive's effective date.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all Skyfox CA25 and CA25N aircraft fitted with ROTAX 912 engines. This legislation mandates the incorporation of Skyfox modification Number 7/97, which was designed to address the issue of excessive RPM drop when carburettor heat is selected. This requirement is intended to ensure the safety of flight operations by expediting the modification of all affected aircraft. The directive stipulates that compliance must be achieved within 10 flying hours or 30 days from the directive's effective date of 18 September 1998, whichever comes sooner. This regulation is enforced by the Civil Aviation Safety Authority (CASA) and pertains to the Commonwealth of Australia, covering all relevant aircraft within its jurisdiction. There are no stated exclusions or exemptions mentioned in the directive, and any further specifics or extensions are managed through subordinate instruments as necessary.

Key Provisions

The Civil Aviation Regulations 1998, specifically within Part 39, mandate certain safety directives for aircraft, including those by Skyfox Aviation. Section 105 of these regulations provides the framework for issuing Airworthiness Directives (ADs). One such AD is AD/CA25/8, which addresses a critical safety issue for Skyfox CA25 and CA25N aircraft equipped with ROTAX 912 engines. The directive requires the incorporation of Skyfox modification number 7/97, issued in October 1997, to rectify the issue of excessive RPM drop when the carburettor heat is selected (Section 105). Compliance with this directive is mandatory and must be achieved within 10 flying hours or 30 days from the directive's effective date of 18 September 1998, whichever is sooner. Under these regulations, the obligations imposed on the operators and owners of Skyfox CA25 and CA25N aircraft with ROTAX 912 engines are clear and stringent. They must ensure that the specified modification is implemented by certified technicians following the manufacturer's instructions. This requirement is non-negotiable and is enforced to prevent any compromise in flight safety. The directive leaves no room for interpretation, demanding prompt compliance to mitigate the identified safety risk. Breaching the requirements of this Airworthiness Directive can have serious consequences. The Civil Aviation Regulations 1998 outline both civil and criminal penalties for non-compliance. Civil penalties may include fines and other monetary sanctions, while criminal penalties can extend to imprisonment, reflecting the severity of disregarding safety directives. The exact penalties are not specified in the directive but are governed by the broader civil aviation laws, which can impose substantial fines and significant jail time for severe breaches affecting flight safety.