AD/BELL 205/51 Amdt 1 - Vertical Fin Spar Cap

Overview

The Civil Aviation Regulations 1998, as amended, include provisions in Part 39 - 105 under the Civil Aviation Safety Authority's schedule of airworthiness directives. Specifically, AD/BELL 205/51 Amendment 1 pertains to the vertical fin spar cap of Bell Helicopter Textron 205 Series Helicopters. Enacted by the Australian Government, this regulation addresses the issue of certain spar cap assemblies that were milled outside of specified tolerances, potentially leading to fatigue cracking and other safety hazards. The policy objective is to ensure the airworthiness and safety of the specified helicopter models by mandating inspections and repairs of the affected components within prescribed timeframes. The amendment extends the applicability to include a broader range of serial numbers, aligning with an update to the associated service bulletin while maintaining stringent thickness requirements for the spar cap. The requirement for inspections and repairs must be completed within specific periods following the amendment's issuance, aiming to mitigate risks associated with compromised structural integrity. This legislative instrument was designed to enhance the safety standards for civil aviation by targeting known issues with the identified helicopter models and ensuring compliance with updated safety directives.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority, apply to Bell Helicopter Textron 205 Series Helicopters, with the amendment AD/BELL 205/51 focusing on vertical fin spar cap issues. This Act applies to helicopters with serial numbers ranging from 30229 to 30332, along with any earlier serial numbers that have had the specified part number spar cap assembly installed after delivery. The regulation mandates inspections and repairs to ensure airworthiness, following the instructions in Bell Alert Service Bulletin No 205-86-23, issued on 26 June 1986. Inspections must be completed within 20 hours of the helicopter being in service after 24 March 1988, but no later than 24 April 1988, while repairs must be carried out within the next 200 hours of service after 24 March 1988, but not later than 24 September 1988. This requirement ensures that any potential structural weaknesses in the vertical fin spar cap are identified and addressed to maintain the safety and reliability of the aircraft. The legislation operates under Commonwealth jurisdiction, applying Australia-wide to all operators and owners of the specified Bell Helicopter Textron 205 Series Helicopters. The regulation does not specify any exclusions or exemptions, but it is limited to the serial number range mentioned and the particular part number in question. Compliance with this directive is critical to prevent fatigue cracking, which could compromise the structural integrity of the helicopters. The regulation does not extend or restrict its application through subordinate instruments, and it specifically notes that revisions to the service bulletin must adhere to the original issue's provisions, despite general provisions to the contrary in paragraph 3.3 of ANO 105.

Key Provisions

The main sections of this Civil Aviation Regulation pertain to Bell Helicopter Textron 205 Series helicopters, specifically addressing vertical fin spar cap issues. Section 212-030-447-001/-101 outlines the applicability of this directive, covering a specific range of serial numbers (30229 to 30332) and any earlier serial numbers that have had the mentioned spar cap assembly installed post-delivery. The requirement section mandates inspections and repairs as per Bell Alert Service Bulletin No. 205-86-23, with specific timelines for compliance. Inspections must be conducted within 20 hours of service time after 24 March 1988 and no later than 24 April 1988. Repairs of any discrepant spar cap assemblies must be completed within the next 200 hours of service time after 24 March 1988, but no later than 24 September 1988. This ensures that any identified issues are addressed promptly to mitigate safety risks. The obligations imposed on the parties governed by these regulations include meticulous adherence to the inspection and repair protocols specified in the referenced service bulletin. Operators and maintainers must ensure that all inspections are carried out as per the original issue of Bell Alert Service Bulletin No. 205-86-23, dated 26 June 1986, and must not use Revision A despite its availability. Furthermore, any discrepant spar cap assemblies identified during inspections must be repaired according to the guidelines provided in Part II of the same bulletin. Compliance with these requirements is critical to maintaining the airworthiness of the affected helicopters and ensuring the safety of all operations. In terms of consequences for non-compliance, the regulations do not explicitly outline specific penalties or legal ramifications for failing to adhere to these directives. However, the importance of these safety measures implies that non-compliance could result in severe civil or criminal penalties under broader aviation safety laws. Such penalties might include fines, suspension or revocation of operating certificates, and potential criminal charges if non-compliance leads to accidents or incidents. It is imperative for operators to strictly follow these directives to avoid any legal repercussions and to maintain the highest standards of aviation safety.