COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 767 Series Aeroplanes
AD/B767/56 Vertical Stabiliser 8/91
Applicability: Model 767 series with line numbers 300 through 307.
Requirement: Action IAW the Technical Requirements of FAA AD 91-10-09 Amdt 39-6993.
Note: Boeing SB 767-55A0007 refers.
Compliance: As specified in the Requirement Document.
Background: Modification of the vertical stabilizer forward closure rib by installation of a lower plate and a panel assembly over lightening and access holes, was not incorporated during production on certain aircraft.
Overview
The Civil Aviation Regulations 1998, under Part 39 - 105, establish a comprehensive framework for ensuring the airworthiness of aircraft operating in Australia. This regulatory framework is enforced by the Civil Aviation Safety Authority (CASA) and is designed to address safety deficiencies and ensure that aircraft meet necessary safety standards. The specific legislation in focus, AD/B767/56, pertains to Boeing 767 series aeroplanes, particularly those with line numbers 300 through 307, and mandates modifications to the vertical stabiliser. This directive was introduced to rectify a production oversight where certain aircraft did not have the required modifications to the vertical stabiliser's forward closure rib, specifically the installation of a lower plate and a panel assembly over the lightening and access holes. This is in accordance with the Technical Requirements set out by the Federal Aviation Administration (FAA) in AD 91-10-09 Amdt 39-6993, as referenced in Boeing Service Bulletin 767-55A0007. The policy objective behind this legislation is to ensure that all affected aircraft are brought into compliance with the necessary safety standards, thereby enhancing overall aviation safety.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, apply to the Boeing 767 series aeroplanes with line numbers ranging from 300 through 307. This regulation mandates adherence to the Technical Requirements outlined in FAA AD 91-10-09 Amendment 39-6993, which involves modifying the vertical stabiliser forward closure rib by installing a lower plate and a panel assembly over lightening and access holes. This modification addresses a production oversight where certain aircraft did not include these components during manufacture. Compliance with the requirements is to be achieved in accordance with the specified technical documentation, and reference to Boeing Service Bulletin 767-55A0007 is provided for further guidance. The scope of this directive is limited to the identified Boeing 767 models and does not extend to other aircraft types or series. Any exclusions or exemptions are not explicitly stated in the provided text. The application of this regulation is enforced by the Civil Aviation Safety Authority (CASA) within the jurisdiction of the Commonwealth of Australia.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, contains provisions related to the safety of aircraft, including directives for airworthiness. One such directive is AD/B767/56, which concerns the vertical stabiliser of Boeing 767 series aeroplanes, particularly those with line numbers 300 through 307 (s. 39-105). This directive mandates modifications to the vertical stabiliser's forward closure rib to enhance its structural integrity. The required modifications must adhere to the Technical Requirements outlined in FAA AD 91-10-09 Amdt 39-6993. For reference, Boeing Service Bulletin 767-55A0007 provides further details on the modifications (s. 39-105).
Operators and owners of Boeing 767 series aeroplanes within the specified line numbers are obligated to comply with this airworthiness directive. They must ensure that the vertical stabiliser forward closure rib is modified according to the specified requirements. This involves installing a lower plate and a panel assembly over the lightening and access holes. Compliance with these modifications is mandatory, and operators must adhere to the directives as specified in the Requirement Document to maintain the aircraft's airworthiness (s. 39-105).
Failure to comply with AD/B767/56 can result in significant consequences. The Civil Aviation Safety Authority (CASA) may take enforcement action against operators who do not adhere to these airworthiness directives. This can include the issuance of fines, suspension, or revocation of the aircraft's certificate of airworthiness. Such actions can lead to the grounding of the aircraft until the required modifications are completed. The severity of the penalties reflects the importance of ensuring the structural integrity of the vertical stabiliser to maintain flight safety (s. 39-105).