AD/PFP/6 - McCauley Propellers - Modification

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority, were enacted to ensure the safe operation of aircraft within Australia. Among the various parts, Part 39 specifically addresses Airworthiness Directives, including AD/PFP/6 concerning fixed pitch propellers. This legislative instrument was introduced to address safety concerns related to the installation and maintenance of McCauley propellers, specifically the model 1B235/BFA7862 fitted to Beech model A23-24 aircraft. The policy objective behind AD/PFP/6 is to mandate modifications to these propellers, as outlined in McCauley Service Bulletin No. 67, to ensure that they meet required safety standards before being installed in aircraft following their next overhaul post-11 July 1968. This directive aims to enhance the overall safety and reliability of the aircraft in question by ensuring that the propellers are maintained in an airworthy condition.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 107, applies to all McCauley model 1B235/BFA7862 propellers fitted to Beech model A23-24 aircraft. This legislation mandates that any modifications to these particular propellers must adhere to the directives set forth in McCauley Service Bulletin No. 67. The applicability of this regulation is geographically broad, covering all such aircraft within the Commonwealth of Australia, thereby ensuring uniform safety standards across the country. This directive must be followed before the propellers are installed in an aircraft following their next overhaul, which must be completed after 11 July 1968. While the regulations themselves set out the mandatory requirements, the scope and specifics of the modifications may be further detailed or extended through subordinate instruments issued by the Civil Aviation Safety Authority.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, Part 39 - 107 Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives (AD) AD/PFP/6, specifically related to McCauley Propellers - Modification, are outlined in section NK. This section mandates a modification to all McCauley model 1B235/BFA7862 propellers fitted to Beech model A23-24 aircraft, as detailed in McCauley Service Bulletin No. 67. The compliance requirement stipulates that this modification must be implemented before the propeller is installed in an aircraft following its next overhaul completed after 11 July 1968. The obligations and requirements imposed by this Airworthiness Directive are quite clear. All owners or operators of Beech model A23-24 aircraft equipped with the specified McCauley propellers must ensure that the propellers are modified in accordance with McCauley Service Bulletin No. 67. This involves making specific changes or adjustments to the propellers to meet updated safety standards, ensuring that they are airworthy and compliant with current regulations. These modifications are essential to address any identified safety issues or to improve the overall performance and reliability of the propellers in service. Failure to comply with the requirements set out in AD/PFP/6 may result in significant consequences. The regulations under the Civil Aviation Act 1988 impose penalties for non-compliance with Airworthiness Directives. For individuals, the maximum penalty for contravening these provisions can be up to 50 penalty units, which equates to a significant financial penalty. For bodies corporate, the maximum penalty is higher, potentially reaching up to 500 penalty units. Additionally, non-compliance could lead to civil or criminal actions, including fines and potential legal proceedings, which could further impact the reputation and operational status of the aircraft involved.