AD/PFT/1 - Model FS200-1 Propeller Spinners - Replacement of Bolts

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 107, address issues concerning the airworthiness of aircraft and their components, such as propellers and spinners. This legislation was enacted to ensure that all aircraft operating within Australian airspace meet safety standards set by the Civil Aviation Safety Authority (CASA). The policy objective behind this regulatory framework is to maintain a high standard of safety for the public by ensuring that aircraft and their components are regularly inspected and maintained according to prescribed directives. One such directive pertains to Flottorp propellers, mandating the replacement of specific bolts in certain propeller spinners to enhance safety and ensure the continued airworthiness of the aircraft. The directive, AD/PFT/1, applies to all Flottorp F12A-3 and F12A-5 series propellers fitted with F200-1 spinners, requiring immediate compliance to mitigate potential safety risks.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 107 concerning the Civil Aviation Safety Authority Schedule of Airworthiness Directives, applies to all Flottorp F12A-3 and F12A-5 series propellers that are fitted with F200-1 spinners. This regulation pertains to the replacement of bolts within the spinner bulkhead to ensure safety and airworthiness standards are met. The requirement outlined in this directive is mandatory and must be complied with immediately. The directive specifies the replacement of six AN4H-7A bolts with six shorter AN4H-6A bolts, allowing for the re-use of the existing AN960-416L washers. Additionally, the bolts must be torqued to a specified range of 70 to 90 inch pounds and safety wired using MS20995- C32 safety wire. Failure to adhere to these specifications could result in non-compliance with aviation safety standards. This legislation extends its jurisdiction across the Commonwealth of Australia, overseen by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, particularly Part 39, include detailed directives on ensuring the airworthiness of aircraft components, including propellers. In Section 107, which governs propellers, specifically variable pitch propellers, there is a focus on the Flottorp F12A-3 and F12A-5 series propellers. The key operative section, AD/PFT/1, mandates the replacement of certain bolts in the spinners of these propellers (Section 1). This involves removing the existing six AN4H-7A bolts that attach the 248-1 spinner bulkhead to the propeller flange, and replacing them with six shorter AN4H-6A bolts. The old AN960-416L washers may be reused in this process (Section 1(1)). The bolts must be torqued to a specified range of 70 to 90 inch pounds, and all bolt heads must be safety-wired with MS20995-C32 safety wire (Section 1(2)). Compliance with these airworthiness directives is mandatory and must be undertaken without delay. This requirement is clearly stipulated under the compliance section of the directive (Section 2). The responsible parties, which include aircraft owners, operators, and maintenance personnel, must ensure that the specified modifications are carried out promptly to maintain the airworthiness of the propellers in question. Failure to comply with these directives can result in significant safety risks, as these modifications are critical for the structural integrity and operational safety of the propellers. The Civil Aviation Regulations 1998 impose clear obligations on all parties involved with the affected aircraft. Aircraft owners and operators must ensure that the prescribed maintenance actions are completed in accordance with the stipulated timeframes. Maintenance personnel must be adequately trained to carry out the specified tasks, using the correct components and procedures. Non-compliance with these obligations can lead to severe consequences, including potential grounding of the aircraft until the necessary modifications are made. The regulations ensure that the aircraft remain airworthy and safe for operation, which is paramount in civil aviation. The legislation also outlines specific consequences for non-compliance with the airworthiness directives. Breaches of these regulations can result in both civil and criminal penalties. The exact nature and severity of these penalties depend on the specific circumstances and the degree of non-compliance. In some cases, civil penalties can include fines, while more serious breaches may result in criminal charges. The maximum penalties for such offences are detailed in the broader regulatory framework, with the potential for significant financial and legal repercussions for individuals and entities that fail to adhere to the requirements. Ensuring strict compliance with these directives is, therefore, not only a matter of regulatory adherence but also of safety and legal obligation.