AD/BELL 206/139 - Main Rotor Blades Part Number 206-010-200-33

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Parliament, play a crucial role in ensuring the safety and efficiency of civil aviation within Australia. One significant legislative instrument under this act is F2006B04453, which addresses specific airworthiness concerns for certain helicopter models. This legislative instrument, issued by the Civil Aviation Safety Authority, targets a particular problem identified with the Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series helicopters. The issue at hand involves the integrity of the main rotor blades, particularly those with part number 206-010-200-33, which have been found to have scratches inside the spar that could compromise their structural integrity. The policy objective of this directive is to ensure that all affected helicopters undergo mandatory inspections to maintain their airworthiness and to prevent potential flight safety hazards. The directive mandates specific inspection protocols to be followed, as outlined in Agusta Bollettino Tecnico 206-229, dated 13 July 1998. The inspections must be performed before further flight after 7 August 1998 and must adhere to a stringent schedule, with certain inspections required within specific time frames to ensure compliance with safety standards. This proactive approach aims to mitigate risks associated with the identified defects and uphold the highest safety standards within Australia's civil aviation sector.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, such as AD/BELL 206/139, which pertains to specific Bell Helicopter Textron Canada (BHTC) and Agusta Bell 206 Series Helicopters. This directive applies to all Agusta-Bell AB.206A and AB.206B helicopters equipped with main rotor blades part number 206-010-200-33, with serial numbers ranging from M3-1501 through M3-2057 and EM-0001 through EM-0154. The directive requires that inspections be conducted in accordance with Agusta Bollettino Tecnico 206-229, dated 13 July 1998, with compliance mandated unless a Part I inspection has already been completed. The directive necessitates a Part I inspection before further flight after 7 August 1998, and thereafter at intervals not exceeding 10 hours of time in service until compliance with Part II is achieved. A Part II inspection must be completed before 30 November 1998, and thereafter, the Part III inspection must be conducted as specified in the requirement document. This airworthiness directive became effective on 7 August 1998, following a report of scratches found inside the spar of a main rotor blade on a time-expired blade removed from service.

Key Provisions

The main operative sections of the AD/BELL 206/139 Airworthiness Directive (paragraph 3) outline the requirement to inspect the main rotor blades of specified Agusta-Bell AB.206A and AB.206B helicopters. This inspection must be conducted in accordance with Agusta Bollettino Tecnico 206-229, dated 13 July 1998, and references RAI AD 98-25-7. The directive is applicable to helicopters with main rotor blades part number 206-010-200-33 and serial numbers within the specified ranges. The inspections are mandated at specific intervals, with a Part I inspection required before further flight after 7 August 1998 and at intervals not exceeding 10 hours of time in service until Part II compliance is achieved. A Part II inspection is required before 30 November 1998, and subsequent inspections must adhere to the specifications outlined in the requirement document for the Part III inspection. The obligations imposed by the AD/BELL 206/139 on the parties governed by this directive include conducting detailed inspections of the main rotor blades as per the specified technical bulletin. Operators and owners of the affected helicopters must ensure that the inspections are performed by qualified personnel and documented appropriately. Compliance with the AD/BELL 206/139 is critical to maintaining the airworthiness of the helicopters and ensuring safety standards are upheld. Any findings from the inspections that indicate damage or wear beyond acceptable limits must be addressed immediately to prevent further flight until the issues are resolved. Failure to comply with the AD/BELL 206/139 may result in civil or criminal penalties. The Civil Aviation Safety Authority (CASA) has the authority to enforce the regulations and may take action against operators who fail to adhere to the inspection requirements. Potential consequences include fines, grounding of the affected aircraft, and other regulatory actions that could impact the operator’s ability to fly the helicopter. Additionally, there may be implications for the operator's insurance coverage and liability in the event of an accident resulting from non-compliance with airworthiness directives.