AD/BELL 412/24 - Main Rotor Pitch Link to Pitch Horn Bolt

Overview

The Civil Aviation Regulations 1998, under Part 39 - 105 Civil Aviation Safety Authority Schedule of Airworthiness Directives, specifically address the maintenance and safety requirements for aircraft in Australia. One such directive, AD/BELL 412/24, pertains to the Bell Helicopter Textron 412 series helicopters, particularly focusing on the main rotor pitch link to pitch horn bolt. This directive was enacted to ensure that all model 412 series helicopters comply with the specified maintenance actions to prevent potential accidents related to the structural integrity of the mentioned component. The Australian Parliament enacted this legislation through the Civil Aviation Regulations, with the primary objective of enhancing aviation safety by mandating specific actions following the discovery of a broken bolt during an accident investigation. The urgency of compliance within five hours of service time after receipt of this directive underscores the critical nature of the required inspections.

Scope and Application

The Civil Aviation Regulations 1998, under Part 39 - 105, apply to all Bell Helicopter Textron 412 series helicopters, encompassing all persons and entities involved in the operation, maintenance, and certification of these aircraft within Australia. The regulations mandate that any relevant action be taken in strict accordance with Bell Alert Service Bulletin 412-89-44, specifically addressing a main rotor pitch link to pitch horn bolt that was found broken during an accident investigation. Compliance with these airworthiness directives is required within five hours of time in service following receipt of this directive, ensuring that any potential issues are promptly addressed to maintain the safety standards set by the Civil Aviation Safety Authority. This legislation extends its application across the Commonwealth, ensuring a uniform approach to aviation safety across all states and territories. There are no specific exclusions or exemptions noted in the directive, although the application and enforcement may be subject to variations through subordinate instruments as necessary for operational and regulatory purposes.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, contains provisions for Airworthiness Directives (ADs) which are regulatory mandates issued by the Civil Aviation Safety Authority (CASA). One such directive, AD/BELL 412/24, pertains to the Bell Helicopter Textron 412 series helicopters. This directive mandates that all operators of model 412 series helicopters must comply with Bell Alert Service Bulletin 412-89-44 (section 1). The requirement is that an action must be taken concerning the main rotor pitch link to pitch horn bolt within 5 hours of time in service after receiving this directive (section 2). Under this regulation, the primary obligation for helicopter operators is to inspect the main rotor pitch link to pitch horn bolt as directed by the Bell Alert Service Bulletin 412-89-44. This inspection must be conducted promptly, specifically within 5 hours of the helicopter being in service following the receipt of the directive (section 2). This requirement is crucial as it stems from an incident where the subject bolt was found broken during an accident investigation, highlighting a potential safety issue that needs immediate attention. Failure to comply with the requirements set out in AD/BELL 412/24 can lead to significant consequences. The Civil Aviation Regulations 1998 impose strict obligations on operators to ensure the airworthiness of their aircraft. Non-compliance with an AD can result in civil penalties, including fines, and potentially criminal charges if the non-compliance is found to be a contributing factor in an accident or incident. The severity of the penalties reflects the importance of adhering to airworthiness directives to maintain the safety standards expected by the Civil Aviation Safety Authority. The penalties for non-compliance with AD/BELL 412/24 can be severe. Civil penalties may include substantial fines, and in more serious cases, criminal charges may be brought against the operator or responsible personnel. The maximum penalties for breaches of the Civil Aviation Regulations 1998 can vary, but they are designed to ensure that all parties take the airworthiness directives seriously. These measures underscore the critical nature of maintaining helicopter airworthiness and the potential legal ramifications of failing to comply with the directives issued by CASA.