AD/BO 105/2 Amdt 1 - Tail Rotor Blade Grips

Overview

The Civil Aviation Regulations 1998, which were enacted to ensure the safety of civil aviation, include specific regulations for airworthiness directives, such as AD/BO 105/2 Amendment 1. This directive pertains to the tail rotor blade grips of Eurocopter BO 105 Series Helicopters, specifically those fitted with tail rotor blade grips part numbers 105-31711 and 105-31722. The objective of this directive is to address the issue of cracks found in the tail rotor blade grips during service, ensuring compliance with existing safety bulletins and directives. The compliance requirements include regular inspections of the clevis area, inboard end, and the hole for the laminated-pack retaining bolt of each grip, with specific intervals set for these inspections during routine maintenance checks. This legislative instrument is part of the ongoing efforts by the Civil Aviation Safety Authority to mitigate safety risks associated with civil aviation. It aims to maintain the airworthiness of aircraft by enforcing rigorous inspection and maintenance protocols. The directive is implemented under the authority of the Australian Government, ensuring that all relevant stakeholders adhere to the safety standards set forth in the Civil Aviation Regulations 1998.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105 Civil Aviation Safety Authority Schedule of Airworthiness Directives, governs the maintenance and safety standards for aircraft within Australia. The regulation in question pertains to Eurocopter BO 105 Series Helicopters, focusing on the critical area of tail rotor blade grips for models fitted with parts P/N 105-31711 and 105-31722. This directive is applicable to all such models and mandates regular inspections to ensure the airworthiness and safety of these helicopters. The inspections must be carried out at specified intervals: for the clevis area and inboard end of each grip, inspections must occur at each 100-hour interval of the tail rotor, while inspections around the hole for the laminated-pack retaining bolt should be conducted at each 600-hour interval. These requirements are designed to prevent the occurrence of cracks that have been identified in service, ensuring that the integrity of the tail rotor blade grips is maintained in accordance with the outlined bulletins and directives. The regulation is part of a broader legislative framework that extends across the Commonwealth of Australia, ensuring uniform safety standards are met by all operators within the national airspace.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes a schedule of airworthiness directives that apply to various aircraft, including the Eurocopter BO 105 Series Helicopters. One such directive, AD/BO 105/2 Amendment 1, pertains to the tail rotor blade grips on all models fitted with specific part numbers (105-31711 and 105-31722). This directive is intended to address the issue of cracks found in the tail rotor blade grips during service. The directive requires three specific inspections of the tail rotor blade grips: the clevis area (Section 1), the inboard end (Section 2), and the area around the hole for the laminated-pack retaining bolt (Section 3). These inspections must be conducted in accordance with BO 105 Alert Bulletin No 18 and BO 105 Service Bulletin No 30-24. The obligations imposed by this directive are clear and specific to the inspection intervals of the helicopter's tail rotor. For paragraphs 1 and 2, inspections must be carried out at each 100-hour inspection of the tail rotor. For paragraph 3, inspections are required at each 600-hour inspection. These inspections are mandatory and must be conducted in accordance with the specified bulletins to ensure compliance with the directive. Failure to adhere to these inspection intervals and procedures could result in the helicopter being deemed unairworthy, thus potentially leading to operational disruptions or safety risks. In terms of consequences for non-compliance, the regulations do not explicitly state penalties within the directive itself but violations of the Civil Aviation Regulations 1998 can lead to a range of civil and criminal consequences. Civil penalties can include fines and the potential grounding of the aircraft until compliance is achieved. Criminal penalties can be more severe, including fines and imprisonment, depending on the severity and impact of the non-compliance. The exact penalties would be determined in the context of broader aviation safety laws and regulations.