AD/PHZL/8 - Hub Spider - Replacement

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, aim to ensure the safe operation of civil aviation within the country. One such regulation, F2006B06236, was introduced to address the specific issue of ensuring the airworthiness of Hartzell propellers used in certain aircraft models. This regulation was implemented under the authority of the Civil Aviation Safety Authority and is designed to maintain the highest safety standards in the aviation industry. The objective of AD/PHZL/8 is to mandate the replacement of certain Hartzell hub spiders in HC12X20 models to prevent potential safety risks associated with these components. Compliance with this directive is critical, as it must be adhered to before the propellers are installed in an aircraft, ensuring that the aviation safety standards set forth by the Civil Aviation Safety Authority are met.

Scope and Application

The Civil Aviation Safety Authority (CASA) has established specific directives under the Civil Aviation Regulations 1998, particularly in Part 39 - 107, which concerns airworthiness directives. This legislation mandates the replacement of certain Hartzell hub spiders on HC12X20 model propellers to ensure continued airworthiness and safety in Australian civil aviation. The directive applies to all HC12X20 models and requires the replacement of hub spiders with specific serial numbers to prevent potential safety hazards. The directive is applicable before the installation of these components in any aircraft operating within Australia, ensuring compliance with international standards set by the Federal Aviation Administration (FAA) and other national regulations. The scope of this airworthiness directive is geographically limited to Australia, as it pertains to aircraft registered and operated within the country's jurisdiction. The directive does not specify any exclusions or exemptions but mandates strict adherence to the prescribed serial numbers for hub spider replacements. The directive may be further extended or modified through subordinate instruments, but as per the current regulation, compliance is mandatory for all specified HC12X20 models before any aircraft operation.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically AD/PHZL/8 under Part 39 - 107, address the replacement of Hartzell hub spiders for certain HC12X20 models (s. 1). This Airworthiness Directive (AD) applies to all HC12X20 models and mandates the replacement of specific Hartzell hub spiders identified by serial numbers (s. 1(1)). The directive lists serial numbers 1 to 4303, 4307 to 4316, 4318, 4319, 4321, 4323, 4324, 4325, 4328, 4329, 4332 to 4336, and 4341, which must be replaced (s. 1(1)(a)). Hub spiders not included in this list may be used as replacements, provided they comply with FAA AD 59-26-1 or ANO 107.1.11.0.1.7 (s. 1(1)(b)). Compliance with this directive requires the replacement of the specified hub spiders before the propeller is installed in an aircraft (s. 1). The obligations imposed by this legislation are clear and specific. Operators of HC12X20 models must ensure that the specified Hartzell hub spiders are replaced as mandated (s. 1). This involves identifying the affected serial numbers and either replacing the hub spiders with new ones that meet the specified requirements or with alternative hub spiders that comply with FAA AD 59-26-1 or ANO 107.1.11.0.1.7 (s. 1(1)). The directive must be followed strictly, with the replacement taking place before the propeller is installed in an aircraft (s. 1). Failure to comply with the AD/PHZL/8 directive can result in significant consequences. While the specific civil or criminal penalties for non-compliance are not detailed in the provided text, the Civil Aviation Regulations 1998 generally provide for a range of penalties for breaches of airworthiness directives. These can include fines, imprisonment, or both, depending on the severity and circumstances of the breach (s. 1). It is essential for operators to adhere to the directive to avoid potential enforcement actions by the Civil Aviation Safety Authority.