AD/CESSNA 303/2 Amdt 1 - Flight Into Icing Conditions

Overview

The Civil Aviation Regulations 1998, specifically within Part 39, address a critical safety concern related to the operation of the Cessna T303 series aeroplanes. Enacted by the Parliament of the Commonwealth of Australia, this legislation aims to mitigate the risks associated with flight into known icing conditions, which have been identified as a significant hazard due to potential ice accumulation on the aircraft’s fin, leading to rudder flutter. The policy objective is to ensure the continued airworthiness and safety of the aircraft by implementing specific modifications and placards to inform pilots of the dangers and restrictions involved in flying in such conditions. This directive is part of a broader effort by the Civil Aviation Safety Authority to maintain high standards of aviation safety across all operations within Australia. The specific legislative instrument, F2006B08129, mandates the installation of a placard stating "FLIGHT INTO KNOWN ICING PROHIBITED" and requires the inclusion of a copy of FAA AD No. 85-11-05 in the Pilot’s Operating Handbook. Additionally, it necessitates the installation of a Rudder Balance Weight Modification Kit in accordance with Cessna Service Bulletin MEB 85-7. These requirements are designed to address the identified problem of ice formation on the fin, thereby preventing rudder flutter and ensuring the safe operation of the affected aircraft.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, which pertains to the Civil Aviation Safety Authority Schedule of Airworthiness Directives, applies to the Cessna T303 Series aeroplanes with serial numbers ranging from T30300001 to T30300315 that are equipped with wing leading edge de-ice boots and propeller de-icing systems. The legislation mandates compliance with certain airworthiness directives aimed at ensuring flight safety, particularly in icing conditions. The requirement includes the installation of a placard stating "FLIGHT INTO KNOWN ICING PROHIBITED" near the anti-ice system switches and the inclusion of a copy of FAA AD No. 85-11-05 in the Pilot’s Operating Handbook. Additionally, a Rudder Balance Weight Modification Kit, Part No SK303-34, must be installed following Cessna Service Bulletin MEB 85-7, with subsequent removal of the specified placard and FAA AD copy. Compliance with these directives is mandatory before further flight after specific dates, namely before 31 August 1985 and before 30 November 1985, to address the issue of ice formation on the fin causing rudder flutter. The regulations cover the Commonwealth of Australia and extend to any relevant territories under the jurisdiction of the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically PART 39 - 105, outlines the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, which apply to the Cessna T303 Series Aeroplanes, with particular amendments concerning flight into icing conditions. This regulation (AD/CESSNA 303/2 Amendment 1) addresses the risks associated with flying Cessna T303 models with specific serial numbers and equipment configurations into known icing conditions. The directive requires the fabrication and installation of a placard adjacent to the anti-ice system switches stating "FLIGHT INTO KNOWN ICING PROHIBITED" (section 1.a). Additionally, it mandates the inclusion of a copy of the Federal Aviation Administration (FAA) AD No. 85-11-05 in the limitation section of the Pilot’s Operating Handbook (section 1.b). These provisions are designed to enhance flight safety by clearly communicating the dangers of flying into icing conditions and providing pilots with necessary information from the FAA regarding the specific hazards and mitigations for the affected aircraft models. The compliance timeline is stringent, requiring adherence before further flight after 31 August 1985 until modifications are made as per the requirements outlined in section 2 of the directive, and again before any flight after 30 November 1985. The directive also specifies that the Rudder Balance Weight Modification Kit, Part No SK303-34, must be installed according to Cessna Service Bulletin MEB 85-7 (section 2.a). Furthermore, the placard and FAA AD copy specified in Part 1 must be removed (section 2.b). Failure to comply with these provisions can result in significant safety risks, particularly the potential for rudder flutter due to ice formation on the fin, which could lead to loss of control of the aircraft. The regulations impose clear obligations on aircraft owners, operators, and maintenance personnel to ensure that these modifications and placards are correctly implemented. The CASA Schedule of Airworthiness Directives underscores the importance of adhering to these safety measures to prevent accidents and ensure the continued airworthiness of the affected aircraft. The consequences of non-compliance with these regulations can be severe, both legally and in terms of safety. Breaches of the Civil Aviation Regulations 1998 can lead to enforcement actions by CASA, which may include fines and other penalties. The specific penalties are not detailed within the AD itself but generally, under the Civil Aviation Act 1988, non-compliance with airworthiness directives can result in substantial fines and potential criminal charges, particularly if the breach leads to an accident or incident. The severity of the penalties reflects the importance of adhering to these safety directives to protect both the aircraft and those on board.