AD/GA-7/2 - Elevator Trim Control Master Chain - Inspection and Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, form a critical framework for ensuring the safety and efficiency of civil aviation in Australia. One specific legislative instrument within this framework, F2006B10146, pertains to the Gulfstream (Grumman American) GA-7 Series Aeroplanes and was introduced to address a safety issue identified with the elevator trim control master chain. This legislation mandates the inspection and, where necessary, the modification of the elevator trim control master chain on affected aircraft to prevent potential failures that could compromise flight safety. The policy objective of this directive is to ensure that the specified aircraft models maintain a high standard of airworthiness, thereby protecting passengers and crew. This legislative instrument is part of the broader regulatory effort under the Civil Aviation Safety Authority (CASA) to enforce airworthiness directives that are issued to address safety concerns in the aviation industry. By implementing this directive, CASA aims to mitigate risks associated with the identified issue and maintain the overall safety standards of the national airspace. The directive applies to all Gulfstream GA-7 Series Aeroplanes with specified serial numbers, requiring compliance within a defined timeframe to ensure that the aircraft meet the necessary safety requirements before they are returned to service.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105 concerning the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, mandates inspection and modification requirements for the elevator trim control master chain of Gulfstream (Grumman American) GA-7 series aeroplanes. This directive applies to all GA-7 models with specific serial numbers, ranging from GA7-0002 to GA7-0036, GA7-0038 to GA7-0043, GA7-0045, and GA7-0049. The regulation targets aircraft owners, operators, and maintenance personnel ensuring compliance with safety standards, and its scope encompasses all Commonwealth territories under the oversight of the Civil Aviation Safety Authority. The directive necessitates inspections and necessary modifications to be conducted within five hours of time in service following 18 December 1978 for aircraft with a current certificate of airworthiness. For aircraft not certified by this date, compliance must be achieved before obtaining certification. The regulations do not explicitly exclude any entities or provide exemptions, thereby applying uniformly to the specified aircraft models within the Commonwealth. Subordinate instruments may further refine the application and enforcement of these airworthiness directives.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, address the airworthiness directives issued by the Civil Aviation Safety Authority (CASA) concerning Gulfstream (Grumman American) GA-7 Series Aeroplanes. This particular legislative instrument, F2006B10146, focuses on the elevator trim control master chain inspection and modification for certain Gulfstream GA-7 series aircraft. Section (1) outlines the applicability of this directive to specific serial numbers (GA7-0002 to GA7-0036, GA7-0038 to GA7-0043, GA7-0045, and GA7-0049), ensuring that only the relevant aircraft are subject to these requirements. Section (2) specifies the documents that must be used for compliance: GAC SB ME-6 or FAA AD 78-22-06. Compliance is further detailed in section (3), which mandates inspections within five hours of time in service after 18 December 1978 for aircraft with a current certificate of airworthiness, and before certification for aircraft not certified at that date. The obligations imposed by this legislation on the relevant parties include conducting a thorough inspection and, if necessary, modifying the elevator trim control master chain on the specified Gulfstream GA-7 aircraft. For aircraft that already hold a current certificate of airworthiness, the inspection must be completed within five hours of time in service after 18 December 1978. Aircraft that were not certified at this date must undergo the inspection and any required modifications before certification can be granted. Compliance with these directives is crucial to ensure the continued airworthiness and safety of the aircraft, and failure to adhere to the specified timelines and procedures could result in serious safety implications. Under the Civil Aviation Regulations 1998, violations of the airworthiness directives can lead to significant consequences. Although the specific penalties for non-compliance are not detailed in this particular directive, the overarching framework of the Civil Aviation Act 1988 provides for both civil and criminal penalties. Civil penalties may include fines, while criminal penalties can result in imprisonment. The severity of the penalties depends on the nature and extent of the breach, as well as any resultant harm or risk to safety. Non-compliance with CASA directives is taken very seriously, and enforcement actions can be taken against individuals or entities that fail to adhere to the mandated safety standards.