COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Boeing 747 Series Aeroplanes
AD/B747/314 Aft Pressure Bulkhead Web 10/2004
Applicability: All Model 747 series aircraft.
Requirement: Action in accordance with the technical requirements of FAA AD 2004-16-09 Amdt 39-13765.
Note: Boeing Service Bulletin 747-53A2482 original issue, or a later revision approved by the FAA, refer.
Compliance: As specified in the Requirement document, with a revised effective date of 30 September 2004.
This Airworthiness Directive becomes effective on 30 September 2004.
Background: The FAA requires certain actions to detect and correct the propagation of fatigue cracks in the vicinity of ‘oil cans’ on the web of the aft pressure bulkhead, which could result in rapid decompression and over-pressurisation of the tail section, and consequent loss of control of the aircraft.
David Villiers
Delegate of the Civil Aviation Safety Authority 20 August 2004
The above AD is notified in the Commonwealth of Australia Gazette on 8 September 2004.
Overview
The Civil Aviation Safety Regulations 1998 (CASR 1998) is a comprehensive set of rules established by the Australian Government to ensure the safety of civil aviation. One aspect of these regulations is the issuance of Airworthiness Directives (ADs) by the Civil Aviation Safety Authority (CASA), a delegate of the Australian Government, to address specific safety concerns. For instance, AD/B747/314 pertains to all Boeing 747 series aircraft and was issued on 20 August 2004, becoming effective on 30 September 2004. This directive was introduced to address the issue of fatigue cracks in the aft pressure bulkhead of these aircraft, which could lead to rapid decompression and potential loss of control. The directive requires adherence to the technical specifications outlined in FAA AD 2004-16-09 Amdt 39-13765 and references Boeing Service Bulletin 747-53A2482, aiming to ensure the safe operation of these aircraft.
Scope and Application
This Airworthiness Directive (AD) issued under the Civil Aviation Safety Regulations 1998 (CASR 1998) applies to all Model 747 series aircraft. The AD mandates actions to address the unsafe condition identified concerning the aft pressure bulkhead web, specifically to detect and correct the propagation of fatigue cracks in the vicinity of 'oil cans' on the web of the aft pressure bulkhead. This requirement is intended to prevent rapid decompression and over-pressurisation of the tail section, which could lead to a loss of control of the aircraft. The directive requires compliance with the technical requirements outlined in FAA AD 2004-16-09 Amdt 39-13765, referencing Boeing Service Bulletin 747-53A2482, and mandates that the specified action be taken by 30 September 2004. This AD applies nationally within the Commonwealth of Australia, and its scope is limited to the specified aircraft model and the particular structural concern addressed. Any exclusions or exemptions are not specified within the directive itself, but compliance is enforced through subordinate instruments and regulatory oversight by the Civil Aviation Safety Authority (CASA).
Key Provisions
The Airworthiness Directive (AD) issued under subregulation 39.1(1) of the Civil Aviation Safety Regulations 1998 (CASR) mandates specific actions to address safety concerns identified in Boeing 747 series aeroplanes. The directive, AD/B747/314, pertains to the aft pressure bulkhead web and requires the detection and correction of fatigue cracks in the vicinity of the "oil cans" on the web of the aft pressure bulkhead (section 1). This directive applies to all Model 747 series aircraft (section 2). The required action must comply with the technical requirements specified in FAA AD 2004-16-09 Amdt 39-13765, with reference to Boeing Service Bulletin 747-53A2482, or a later revision approved by the FAA (section 3). Compliance with this directive must be achieved by the effective date of 30 September 2004, as outlined in the requirement document (section 4).
The AD imposes specific obligations on the parties or entities it governs, primarily those responsible for the maintenance and operation of Boeing 747 series aircraft. These parties must adhere to the prescribed technical requirements, ensuring that the necessary inspections and corrective actions are carried out to detect and address fatigue cracks in the aft pressure bulkhead web. This involves following the detailed instructions provided in the referenced FAA and Boeing service bulletins. Non-compliance with the AD could lead to significant safety risks, including rapid decompression, over-pressurisation of the tail section, and loss of control of the aircraft.
The AD does not explicitly detail offences or penalties for non-compliance within its text. However, failure to comply with an AD under CASR 1998 may result in severe civil or criminal consequences under other sections of the regulations or related legislation. The penalties for such breaches can include fines, imprisonment, or both, depending on the severity of the non-compliance and the specific provisions of the CASR or other applicable laws. The maximum penalties can vary widely but are designed to ensure stringent adherence to safety standards in civil aviation.