COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Embraer EMB-120 (Brasilia) Series Aeroplanes
AD/EMB-120/24 Aileron Mass Balance Weights 5/98
Applicability: All models EMB-120 aircraft.
Requirement: Inspect in accordance with Embraer Service Bulletin 120-27-0077 Revision 01.
Note: CTA AD 98-01-02 Amdt 39-826 refers.
Compliance: For Part I of the Requirement Document:
Within 150 hours time in service after 23 April 1998, and thereafter at intervals not to exceed 1,000 hours time in service until accomplishment of the inspection required by Part II of the Requirement Document.
For Part II of the Requirement Document:
Within 2,000 hours time in service after 23 April 1998 or one calendar year, which ever occurs first.
This Airworthiness Directive becomes effective on 23 April 1998.
Background: Investigation has revealed the possibility of a deformation occurring in the mass- balance weights of the aileron, which could eventually lead to a physical contact and possibly friction between the exposed end of the mass-balance weight with the adjoining attach fitting.
Overview
The Civil Aviation Regulations 1998, specifically PART 39 - 105, addresses the maintenance and safety standards for civil aviation in Australia. The Embraer EMB-120 (Brasilia) Series Aeroplanes AD/EMB-120/24 Aileron Mass Balance Weights directive was introduced by the Civil Aviation Safety Authority (CASA) to ensure the safety and airworthiness of these aircraft models. The directive was enacted to address the identified risk of deformation in the mass-balance weights of the ailerons, which could potentially cause friction and compromise the aircraft's structural integrity. The objective of the policy is to mitigate such risks through mandated inspections in accordance with Embraer Service Bulletin 120-27-0077 Revision 01.
This Airworthiness Directive became effective on 23 April 1998, requiring inspections at specific intervals to maintain the safety standards set forth by CASA. The inspections must be carried out within 150 hours time in service after the directive's implementation date and then at intervals not exceeding 1,000 hours until the more stringent inspection required by the directive is accomplished. The primary aim is to ensure that any potential deformations are identified and rectified promptly, thereby maintaining the overall safety and compliance of the Embraer EMB-120 aircraft within the Australian civil aviation framework.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to airworthiness directives issued by the Civil Aviation Safety Authority (CASA) and applies to all Embraer EMB-120 (Brasilia) series aeroplanes. This legislative instrument mandates the inspection of aileron mass balance weights in compliance with Embraer Service Bulletin 120-27-0077 Revision 01, as referenced in CTA AD 98-01-02 Amendment 39-826. The directive applies to all EMB-120 aircraft and requires inspections to be conducted within 150 hours of service after 23 April 1998, and subsequently at intervals not exceeding 1,000 hours until the completion of the inspection detailed in Part II of the requirement document. For Part II of the requirement, inspections must be completed within 2,000 hours of service after 23 April 1998 or within one calendar year, whichever comes first. The directive became effective on 23 April 1998, in response to investigations that identified the potential for deformation in the mass-balance weights of the aileron, which could lead to physical contact and friction with adjoining attach fittings.
Key Provisions
The main operative sections of this legislation, specifically AD/EMB-120/24, pertain to the Embraer EMB-120 (Brasilia) Series Aeroplanes (section 1). It mandates that inspections be carried out in accordance with Embraer Service Bulletin 120-27-0077 Revision 01 (section 2). The inspection intervals are specified as within 150 hours time in service after 23 April 1998 for Part I of the Requirement Document, and thereafter at intervals not exceeding 1,000 hours time in service until the inspection required by Part II of the Requirement Document is completed (section 3). For Part II, the inspection must occur within 2,000 hours time in service after 23 April 1998 or one calendar year, whichever occurs first (section 4). This directive became effective on 23 April 1998 (section 5).
The obligations imposed by this legislation require that all models of the EMB-120 aircraft must undergo inspections as per the specified intervals. For Part I of the Requirement Document, inspections must be performed within 150 hours after 23 April 1998, and then at intervals not exceeding 1,000 hours until the inspection required by Part II is accomplished. For Part II, the inspection must be completed within 2,000 hours after 23 April 1998 or within one calendar year, whichever comes first. These obligations are designed to ensure the safety and airworthiness of the aircraft by preventing potential deformations in the aileron mass-balance weights that could lead to physical contact and friction.
The consequences for non-compliance with this legislation are significant. Failure to adhere to the specified inspection intervals and requirements could result in serious safety hazards, potentially leading to accidents or incidents that compromise the safety of passengers and crew. While the Civil Aviation Regulations 1998 do not explicitly state penalties for non-compliance with Airworthiness Directives, breaches can lead to enforcement actions by the Civil Aviation Safety Authority (CASA). These actions may include fines, suspension or revocation of airworthiness certificates, and other regulatory measures designed to ensure compliance and maintain high safety standards in the aviation industry.