AD/BELL 412/5 Amdt 1 - Engine Fuel Switch - Inspection/Replacement

Overview

The Civil Aviation Regulations 1998, specifically under PART 39 - 105, include the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives which aims to address safety issues in aviation. One such directive, AD/BELL 412/5 Amdt 1, pertains to the inspection and replacement of engine fuel switches in the Bell Helicopter Textron 412 Series Helicopters, particularly for models 412 with serial numbers between 33001 and 33100. This directive was introduced to mitigate the risk of engine fuel supply shut-offs due to malfunctioning engine fuel switches, a problem identified through reports and further documented in Bell Tech Bulletin No. 412-82-10 Rev. “A” dated 14th December 1982. Compliance with this directive is mandatory, requiring that the specified inspections and replacements be carried out within 25 hours of time in service following 30 April 1983, unless already completed. The objective of this airworthiness directive is to ensure the continued safe operation of the affected Bell Helicopters by addressing potential safety hazards associated with the fuel switch malfunctions. By issuing this directive, CASA aims to uphold stringent safety standards and prevent incidents that could compromise the integrity of flight operations. The directive mandates prompt compliance to ensure that all affected aircraft are brought up to the required safety standards.

Scope and Application

The Civil Aviation Safety Authority's Airworthiness Directives under the Civil Aviation Regulations 1998 pertain specifically to the safety and airworthiness of aircraft. In this instance, the regulation AD/BELL 412/5Amdt 1 is directed towards the Bell Helicopter Textron 412 Series helicopters with serial numbers ranging from 33001 to 33100. This legislative instrument mandates compliance with the inspection and replacement of engine fuel switches to address issues of malfunctioning switches that could inadvertently shut off the engine fuel supply, thereby compromising flight safety. The directive applies to the specified model and serial numbers of helicopters, requiring compliance within 25 hours of time in service after the directive's publication date of 30 April 1983, unless such action has already been taken. This legislative instrument extends its jurisdictional reach across the Commonwealth of Australia, ensuring that all operators of the affected helicopters within Australian airspace adhere to the stipulated safety measures.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, contains the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives for various aircraft models. One such directive, AD/BELL 412/5 Amendment 1, pertains to the Bell Helicopter Textron 412 Series Helicopters (section 1). This directive focuses on the engine fuel switch and mandates either its inspection or replacement, as detailed in Bell Tech Bulletin No. 412-82-10 Rev. “A” dated 14th December 1982 (section 2). The directive applies to Bell Helicopters with serial numbers ranging from 33001 to 33100 (section 3). Compliance with this directive is required within 25 hours of time in service after 30 April 1983, unless the specified work has already been completed (section 4). The Act imposes specific obligations on the operators and owners of the affected Bell Helicopter Textron 412 Series Helicopters. These parties must ensure that the engine fuel switch is either inspected or replaced as per the requirements outlined in the Bell Tech Bulletin No. 412-82-10 Rev. “A” (section 5). The compliance period is strictly within 25 hours of time in service following 30 April 1983, unless the task has already been performed (section 6). Failure to comply with these directives could result in the aircraft being considered unairworthy, which would prevent it from operating until the required inspections and replacements are completed (section 7). The Civil Aviation Regulations 1998 establish penalties and consequences for non-compliance with the airworthiness directives. Specifically, operating an aircraft that does not meet the airworthiness standards set out in these directives can lead to enforcement actions (section 8). The maximum penalties for breaches can include fines, imprisonment, or both, depending on the severity of the non-compliance and the specific provisions of the Regulations (section 9). Additionally, CASA has the authority to issue orders for the grounding of non-compliant aircraft, which can result in significant operational disruptions and financial penalties for the operators and owners (section 10).