COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 336 Series Aeroplanes
AD/CESSNA 336/2 Cooling Fan - Inspection 6/65
Applicability: All models not modified in accordance with Cessna SL 65-42.
Requirement: 1. Remove rear engine cowls, remove propeller and cooling fan, and dismantle fan assembly.
Note: It is important in order to retain the balance of the assembly to mark all parts in their existing position so that when re-assembly is made, no change in balance will occur.
2. Inspect support plates P/No. 1457212-1 and 1457217-1 for cracks paying particular attention to the area around the inner circle of attachment holes.
3. Inspect the pan P/No. 1457219-1 for cracks, again paying particular attention to the area around the inner circle of attachment holes.
4. Any replacement of parts will require rebalancing of assembly. Compliance: At intervals not exceeding 100 hours time in service after 1 June 1965.
Overview
The Civil Aviation Regulations 1998, specifically PART 39 - 105, introduced the Civil Aviation Safety Authority Schedule of Airworthiness Directives to address safety concerns and ensure the airworthiness of aircraft operating within Australian airspace. Enacted by the Commonwealth of Australia, these regulations aim to maintain the highest standards of safety and operational reliability for civil aviation. One such directive, AD/CESSNA 336/2, pertains to the Cessna 336 Series Aeroplanes, focusing on the inspection of the cooling fan to prevent potential failures and ensure the continued safety of these aircraft. This directive, issued under the authority of the Civil Aviation Safety Authority, mandates regular inspections and maintenance checks at intervals not exceeding 100 hours of service to mitigate risks associated with the cooling fan system.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandates the applicability of Airworthiness Directives issued by the Civil Aviation Safety Authority (CASA) to all Cessna 336 series aeroplanes that have not been modified in accordance with Cessna Service Letter 65-42. This directive pertains to the inspection of the cooling fan assembly and associated components, which is critical for ensuring the continued airworthiness of these aircraft. The requirement encompasses the removal and detailed inspection of specific support plates and a pan within the cooling fan assembly, with particular attention to potential cracks around the attachment holes. Any detected issues must be addressed by replacing the affected parts and rebalancing the fan assembly. Compliance with these inspection intervals, not exceeding 100 hours of time in service after 1 June 1965, is mandatory for the safe operation of these aircraft within Australian airspace.
The scope of this directive extends to all operators of Cessna 336 series aeroplanes within Australia, irrespective of whether the aircraft are used for commercial, charter, or private purposes. The geographic reach of this legislation is national, applying across all states and territories within the Commonwealth of Australia. No specific exclusions or exemptions are mentioned within the text, implying that the directive applies universally to all compliant aircraft. The regulation may be further extended or refined through subordinate instruments issued by CASA, which can provide additional guidelines or clarifications to ensure consistent application and compliance by the aviation industry.
Key Provisions
The Civil Aviation Regulations 1998, specifically within Part 39 - 105, mandate adherence to airworthiness directives issued by the Civil Aviation Safety Authority (CASA). The regulation in question, AD/CESSNA 336/2, pertains to the inspection of the cooling fan of Cessna 336 series aeroplanes (section 6/65). This directive applies to all models of the Cessna 336 series that have not been modified in accordance with Cessna SL 65-42. The primary requirement outlined in the directive involves a detailed inspection of the cooling fan assembly. This includes removing the rear engine cowls, the propeller, and the cooling fan itself, followed by a thorough dismantling of the fan assembly (section 1). It is critical during this process to mark all parts in their existing positions to ensure that no change in balance occurs upon reassembly.
The obligations imposed by this directive necessitate precise and regular inspections of the cooling fan. Specifically, the support plates P/No. 1457212-1 and 1457217-1 must be inspected for any signs of cracks, with particular attention given to the areas around the inner circle of attachment holes. Similarly, the pan P/No. 1457219-1 must also be inspected for cracks in the same critical areas (section 2 and 3). If any parts are found to be damaged and require replacement, it is mandatory to rebalance the assembly to maintain the integrity and safety of the aircraft. Compliance with these inspection requirements must occur at intervals not exceeding 100 hours of time in service after 1 June 1965 (section Compliance).
Failure to comply with the airworthiness directive AD/CESSNA 336/2 can result in significant legal and safety repercussions. Although the specific penalties for non-compliance are not detailed in the excerpt, under the Civil Aviation Regulations 1998, violations of airworthiness directives can lead to severe consequences. These may include fines, penalties, and in more serious cases, criminal charges against the aircraft operator or responsible personnel. The exact penalties are determined by the severity of the breach and can include substantial financial penalties, as well as potential imprisonment. Ensuring compliance with these directives is therefore not only a legal obligation but also a crucial measure to maintain the safety and airworthiness of the aircraft.