COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 400 Series Aeroplanes
AD/CESSNA 400/43
Amdt 8
Engine Exhaust System 13/97
Applicabilility: All model 401, 401A, 401B,402,402A,402B,414,414A,421,421A and 421B series aeroplanes.
Requirement: 1. Inspect applicable aircraft engine exhaust system assemblies in accordance with the provisions of Cessna SIL ME75-17 and Cessna SIL ME79-32.
2. Inspect exhaust system components in accordance with the provisions of Table II of Cessna SIL No. ME79-32.
3. Replace multi-segment ‘V’ band exhaust clamps listed in Table III of Cessna SIL No. ME79-32.
Note: FAA AD 75-23-08 R5 Amdt 39-5451 refers.
Compliance: 1. At intervals not exceeding 50 hours time in service.
2. At intervals not exceeding 100 hours time in service.
3. At intervals not exceeding 750 hours time in service.
This airworthiness directive becomes effective on 4 December 1997.
Background: This amendment deletes the 421C series aeroplane from the AD applicability. This model aircraft has a modified exhaust system which is not subject to the defects addressed by this directive.
Amendment 7 of this airworthiness directive became effective on 20 August 1992. Amendment 6 of this airworthiness directive became effective on 12 March 1987. The original issue of this airworthiness directive became effective on 31 March 1975.
Overview
The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, aim to ensure the safety and efficiency of civil aviation within the country. Among the various components of these regulations, Part 39 specifically addresses airworthiness directives, which are mandatory orders issued by the Civil Aviation Safety Authority (CASA) to ensure the continued airworthiness of aircraft. AD/CESSNA 400/43 Amendment 8, which was introduced to address issues with the engine exhaust system of certain Cessna 400 series aeroplanes, is an example of such directives. The primary objective of this amendment is to rectify potential safety hazards by requiring regular inspections and necessary replacements of exhaust system components to maintain the operational safety of the affected aircraft models. This airworthiness directive was made effective on 4 December 1997, following amendments that updated the applicability and compliance requirements based on ongoing safety assessments and industry feedback.
Scope and Application
The Civil Aviation Regulations 1998, specifically PART 39 - 105, applies to all model 401, 401A, 401B, 402, 402A, 402B, 414, 414A, 421, 421A and 421B series aeroplanes manufactured by Cessna. This regulation falls under the purview of the Civil Aviation Safety Authority and is applicable nationwide, thereby extending its jurisdictional reach across the Commonwealth of Australia. The directive excludes the 421C series aeroplane, which has a modified exhaust system not subject to the defects addressed by this directive. Compliance with the directive requires inspections and replacements of the engine exhaust system assemblies, components, and clamps at specified intervals, as outlined in the associated Cessna Service Letters. This regulation is enforced to ensure the safety and airworthiness of the specified aircraft models within the Australian airspace.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39, section 105, addresses the safety requirements for the Cessna 400 series aeroplanes, particularly focusing on the engine exhaust system. This legislative instrument, AD/CESSNA 400/43 Amendment 8, mandates several key provisions to ensure the airworthiness of these aircraft models. The directive applies to all model 401, 401A, 401B, 402, 402A, 402B, 414, 414A, 421, 421A, and 421B series aeroplanes. The primary requirement is a thorough inspection of the applicable aircraft engine exhaust system assemblies in accordance with Cessna SIL ME75-17 and Cessna SIL ME79-32 (sections 1-3). Additionally, it requires inspecting the exhaust system components according to the provisions of Table II of Cessna SIL No. ME79-32, and replacing multi-segment ‘V’ band exhaust clamps as listed in Table III of the same document. These requirements ensure that the exhaust system components are maintained and any defects are rectified to prevent potential safety issues.
Entities governed by this regulation, including aircraft operators and maintenance providers, must comply with the specified inspection and replacement intervals. Inspections of the engine exhaust system assemblies must be conducted at intervals not exceeding 50 hours of time in service, while inspections of exhaust system components must occur at intervals not exceeding 100 hours of time in service. The replacement of multi-segment ‘V’ band exhaust clamps must be performed at intervals not exceeding 750 hours of time in service. These intervals ensure that the exhaust systems are regularly maintained and any potential issues are identified and addressed promptly.
Failure to comply with these airworthiness directives can result in serious consequences. Civil Aviation Safety Authority (CASA) regulations stipulate that non-compliance with airworthiness directives can lead to enforcement actions. In cases of non-compliance, there may be civil or criminal penalties imposed. The specific penalties for non-compliance are not detailed in the provided text, but they can include fines, suspension or revocation of operating certificates, and other regulatory sanctions. The maximum penalties for such breaches are determined by CASA based on the severity of the non-compliance and the potential risk posed to aviation safety.