AD/PC-6/8 - Rear Fuselage - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, provide the legal framework governing all aspects of civil aviation within the country, including aircraft airworthiness and safety. Among these regulations, Part 39 - 105 is dedicated to Airworthiness Directives, which are binding orders issued by the Civil Aviation Safety Authority (CASA) to address safety issues identified in aircraft operations. One such Airworthiness Directive, AD/PC-6/8, pertains specifically to Pilatus Porter PC-6 Series Aeroplanes and mandates modifications to the rear fuselage to enhance structural integrity and safety. This directive was introduced to address potential risks associated with the rear fuselage of these aircraft models, ensuring that all affected aeroplanes comply with safety standards before 1 July 1966. The policy objective behind these regulations is to maintain and improve the safety of civil aviation operations in Australia by enforcing necessary modifications and compliance with safety standards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105 concerning the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, applies to Pilatus Porter PC-6 Series aeroplanes with a maximum take-off weight of 4850 lbs. This regulation mandates compliance with Airworthiness Directive AD/PC-6/8, which requires modifications to the rear fuselage. This applies to all models of the Pilatus Porter PC-6 Series within the specified weight category. The directive is jurisdictional in scope, applying throughout the Commonwealth of Australia, thus affecting operators, aircraft owners, and maintenance personnel across the country. The directive does not specify any exclusions, exemptions, or thresholds other than the weight limitation of 4850 lbs, and compliance must be achieved before 1 July 1966, as referenced in Pilatus Service Bulletin No. 41. The application of this directive may be further extended or detailed through subordinate instruments issued by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes an Airworthiness Directive (AD) for the Pilatus Porter PC-6 Series Aeroplanes, identified as AD/PC-6/8, which pertains to the rear fuselage modification (section 105.020). This directive applies to all models of the Pilatus Porter PC-6 Series with a maximum take-off weight of 4850 lbs (section 105.030). The directive references Pilatus Service Bulletin No. 41 for compliance (section 105.040). Compliance with this directive is required before July 1, 1966 (section 105.050). The AD mandates that operators of the Pilatus Porter PC-6 Series aeroplanes must ensure that the modifications to the rear fuselage as outlined in Pilatus Service Bulletin No. 41 are completed before the specified compliance date (section 105.060). This involves verifying that the modifications have been properly executed, which may include inspections, repairs, or replacements of specific components to meet the safety standards set by the Civil Aviation Safety Authority (CASA) (section 105.070). Operators must maintain records of the modifications and inspections to demonstrate compliance with the directive (section 105.080). Failure to comply with the AD/PC-6/8 may result in significant legal and safety consequences. Operators who do not adhere to the specified compliance date risk facing enforcement actions from CASA, which could include fines or other penalties (section 105.090). Additionally, operating an aircraft that does not meet the airworthiness standards set forth in the directive could lead to the grounding of the aircraft until the necessary modifications are completed, potentially disrupting operations and incurring further costs (section 105.100). In severe cases, non-compliance could result in the suspension or revocation of the aircraft's airworthiness certificate, which would prevent the aircraft from being flown legally (section 105.110).