AD/BELL 206/113 - Wedge (Bulged) Windows in Single Latch Doors

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority, were enacted to ensure the safety and regulation of civil aviation in Australia. One of the specific amendments introduced to these regulations is F2006B04427, which addresses a critical safety concern related to Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters. This legislative instrument, specifically AD/BELL 206/113, was introduced to address the problem of "wedge" windows in single latch doors on certain models of these helicopters opening without warning during flight. The policy objective of this directive is to enhance passenger safety by mandating the installation of a specific warning placard on each affected door. The requirement stipulates that the placard must be prominently displayed, with the word "WARNING" significantly larger than the rest of the text, to ensure that pilots and passengers are continually reminded of the potential hazard and are required to wear seat belts or harnesses at all times. Compliance with this directive is mandatory and must be completed before the next Maintenance Release following the directive's issuance on 16 June 1988. The urgency of this directive stems from documented instances where the single latch doors with wedge windows have opened unexpectedly in flight, posing a significant risk to the safety of the aircraft and its occupants. The Civil Aviation Safety Authority, through this legislative instrument, aims to mitigate these risks by enforcing the installation of clear and conspicuous warnings, thereby enhancing overall flight safety standards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the authority of the Civil Aviation Safety Authority, mandates the issuance of Airworthiness Directives (AD) to ensure the safety of civil aviation. One such directive, AD/BELL 206/113, applies to all Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series helicopters, specifically model 206A and 206B prior to serial number 1751, that are equipped with 'wedge' windows in their single latch doors. This regulation is applicable to the Commonwealth of Australia and imposes an obligation on the operators of these helicopters to comply with the specified safety measures. The directive mandates the installation of a warning placard on each door equipped with a 'wedge' window, with the placard's lettering being no less than 3.5 mm high, in white on a red background, and with the word 'WARNING' at least 40% higher than the other lettering. This requirement must be met prior to the issuance of the next Maintenance Release after 16 June 1988. The directive is grounded in reports from the manufacturer concerning incidents of single latch doors opening without warning during flight, thereby necessitating the installation of a clear warning to mitigate the risk of such occurrences.

Key Provisions

The Civil Aviation Regulations 1998 (CAR) specifically address the airworthiness of aircraft in Part 39, with Regulation 39.105 being particularly relevant to the Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters. Under Section AD/BELL 206/113, all models 206A and 206B prior to serial number 1751 that have 'wedge' windows fitted to single latch doors must comply with certain safety directives. This requirement is directly tied to reported incidents where single latch doors with wedge windows opened without warning during flight, thus posing a significant safety hazard. To mitigate this risk, the regulation mandates that a specific placard must be installed on each door fitted with a 'wedge' window. The placard must be placed above the operating handle at nominal eye level and should contain the words "WARNING DOOR MAY OPEN WITHOUT WARNING. SEAT BELT OR HARNESS TO BE WORN AT ALL TIMES." The lettering on the placard must be no less than 3.5 mm in height, with the word 'WARNING' being at least 40% larger than the other text. Additionally, the lettering must be white on a red background to ensure high visibility and immediate attention. Operators of affected helicopters must ensure compliance with this directive prior to the issue of the next Maintenance Release after 16 June 1998. Failure to comply with this requirement may result in the aircraft not meeting the necessary airworthiness standards, potentially leading to enforcement actions by the Civil Aviation Safety Authority (CASA). Such actions could include fines, suspension of airworthiness certificates, or other regulatory sanctions aimed at ensuring compliance and maintaining safety standards in civil aviation. In terms of enforcement, any breach of these airworthiness directives may result in civil penalties, including fines up to a significant amount as prescribed under the Civil Aviation Act 1988. Additionally, continued operation of a non-compliant aircraft could lead to criminal charges against the operators or maintenance personnel responsible for ensuring compliance. The maximum penalties can vary, but they are designed to be severe enough to deter non-compliance and ensure the highest standards of aviation safety are upheld.