COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
British Aerospace BAe 125 Series Aeroplanes
AD/HS 125/122
Amdt 1
Watertank Shroud Drain Outlet 5/98
Applicability: Model 125 series 800A and 800B with constructor’s numbers as listed in British Aerospace SB 25-67-25A013A Revision 1.
Requirement: Action in accordance with Mandatory British Aerospace SB 25-67-25A013A.
Note: UK CAA AD 005-07-91 refers.
Compliance: As specified in the requirement document.
The compliance of the original issue of this directive remains unchanged. This amendment becomes effective on 23 April 1998.
Background: This Directive requires a modification to the washbasin watertank shroud drain in order to reduce the possibility of aileron control cable icing, following any washbasin watertank leakage.
Amendment 1 is issued to re-instate this directive to the series.
The original issue of this Airworthiness Directive became effective on 14 November 1991.
Overview
The Civil Aviation Regulations 1998, enacted by the Australian Parliament, are integral to ensuring the safety of civil aviation in Australia. Part 39, particularly 105, focuses on Airworthiness Directives, aiming to maintain the airworthiness of aircraft by issuing necessary modifications and inspections. One such directive, AD/HS 125/122, pertains specifically to the British Aerospace BAe 125 Series Aeroplanes, addressing the issue of watertank shroud drain outlet to prevent aileron control cable icing due to watertank leakage. The policy objective of this regulation is to ensure the safety and reliability of aircraft by mitigating risks associated with structural components. The directive requires compliance with the mandatory British Aerospace Service Bulletin, reflecting the importance of adherence to international standards in maintaining airworthiness. This legislative instrument underscores the commitment to safety within Australia's civil aviation framework, aiming to prevent potential hazards that could compromise flight safety.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to airworthiness directives issued by the Civil Aviation Safety Authority (CASA) to ensure the safety and airworthiness of aircraft within the Australian jurisdiction. This particular directive, AD/HS 125/122 Amendment 1, applies to British Aerospace BAe 125 Series Aeroplanes, namely the Model 125 series 800A and 800B, identified by specific constructor’s numbers as detailed in British Aerospace Service Bulletin 25-67-25A013A Revision 1. The directive mandates compliance with the requirements outlined in the specified British Aerospace service bulletin, ensuring adherence to safety standards to mitigate the risk of aileron control cable icing due to watertank leakage. This directive is effective as of 23 April 1998, maintaining the compliance standards set in the original directive issued on 14 November 1991. The directive’s geographic reach is confined to the Commonwealth of Australia, affecting the specified aircraft models operating within the country. The directive does not specify any exclusions, exemptions, or thresholds, and its application is direct and mandatory for the identified aircraft models.
Key Provisions
The Civil Aviation Regulations 1998 (Cth), specifically in Part 39, section 105, outlines the requirements and procedures for ensuring the airworthiness of certain aircraft types. In this instance, it concerns the British Aerospace BAe 125 Series Aeroplanes, particularly the models 800A and 800B. This regulation was amended as per AD/HS 125/122 Amendment 1, issued on 5th September 1998, focusing on the modification of the washbasin watertank shroud drain outlet. The directive mandates compliance with the British Aerospace Service Bulletin (SB 25-67-25A013A) to mitigate the risk of aileron control cable icing due to washbasin watertank leakage.
The key requirement, as stated in the directive, is for operators of the specified British Aerospace BAe 125 Series Aeroplanes to take action in accordance with the aforementioned Service Bulletin. The directive references UK Civil Aviation Authority (CAA) AD 005-07-91, which further details the necessary modifications. Compliance with these directives is critical, as it directly affects the safety of the aircraft by preventing potential icing issues that could compromise control. The directive originally took effect on 14 November 1991, with the amendment bringing the directive back into focus for the specified series on 23 April 1998.
The obligations imposed by this legislation are clear and stringent. Aircraft operators must adhere to the specific modifications outlined in the British Aerospace SB 25-67-25A013A, ensuring that the washbasin watertank shroud drain outlet is correctly modified. This requirement is not only about making the physical changes but also about maintaining detailed records of the modifications to prove compliance. Operators must ensure that the modifications are carried out by qualified personnel and that the aircraft are inspected to verify compliance with the directive. This ongoing obligation is critical to maintaining the airworthiness of the aircraft.
Failure to comply with the provisions of this directive could lead to significant consequences. Although the specific penalties are not detailed within the directive itself, under broader civil aviation regulations, non-compliance can result in severe penalties. These may include fines, suspension or revocation of the aircraft’s certificate of airworthiness, and potential criminal charges against the operator or responsible personnel. The severity of the penalties underscores the importance of adhering to these airworthiness directives to ensure the safety and reliability of the aircraft in operation.