COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 747 Series Aeroplanes
AD/B747/21
Amdt 3
Nacelle Strut Forward Engine Mount Bulkhead 6/98
Applicability: Model 747 series aircraft; as listed in Boeing Alert Service Bulletin 747-54A2069, Revision 9.
Requirement: Action in accordance with the technical requirements of FAA AD 98-02-02 Amdt 39- 10284.
Compliance: As specified in the Requirement document for the repetitive inspection requirements, until terminating modification action is accomplished.
This amendment becomes effective on 21 May 1998.
Background: Service experience with aircraft previously repaired, has shown that the parts provided for the repair were incorrectly heat treated. Amendment 2 provided for on- going repetitive inspection, or, alternatively, accomplishment of a revised repair scheme.
Amendment 3 is issued in response to a new FAA AD prompted by reports that fatigue cracking was found in an area adjacent to the inspection area specified in the existing FAA AD. This amendment adds repetitive inspections for certain aircraft, adds a one-time inspection for other aircraft, and adds an additional optional terminating action for the repetitive inspection requirement.
Amendment 2 to this Airworthiness Directive became effective on 31 December 1982.
Amendment 1 to this Airworthiness Directive became effective on 30 April 1980.
The original issue of this Airworthiness Directive became effective on 29 February 1980.
Overview
The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, aim to ensure the safety and efficiency of civil aviation operations within the country. One significant piece of legislation within this framework is the Airworthiness Directive AD/B747/21, which applies specifically to Boeing 747 series aircraft. This directive was introduced to address issues related to the structural integrity of the nacelle strut forward engine mount bulkhead. The policy objective of this directive is to mitigate risks associated with incorrectly heat-treated parts that could lead to fatigue cracking, thereby ensuring the continued airworthiness and safety of these aircraft. The directive mandates specific actions and inspections to address the identified problem, aiming to prevent potential failures and maintain high safety standards in civil aviation.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Airworthiness Directives for Boeing 747 Series Aeroplanes, as outlined in the Civil Aviation Safety Authority Schedule. The regulation applies to all Model 747 series aircraft as listed in Boeing Alert Service Bulletin 747-54A2069, Revision 9. It mandates adherence to the technical requirements specified in FAA AD 98-02-02 Amdt 39-10284, with compliance to be ensured according to the repetitive inspection requirements until the terminating modification action is completed. This regulation has a national jurisdictional reach within Australia, governed by the Commonwealth of Australia and enforced by the Civil Aviation Safety Authority. It extends its application through subordinate instruments such as Airworthiness Directives and Boeing Alert Service Bulletins, which detail specific technical requirements and inspection protocols. There are no explicit exclusions mentioned in the provided text, implying that all applicable aircraft must comply with the stipulated directives.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, outlines the requirements for the airworthiness directives (AD) concerning Boeing 747 series aircraft. Section 39 - 105 details the Airworthiness Directive for the nacelle strut forward engine mount bulkhead (AD/B747/21 Amdt 3), which applies to Boeing 747 series aircraft as listed in Boeing Alert Service Bulletin 747-54A2069, Revision 9. This AD mandates compliance with the technical requirements outlined in FAA AD 98-02-02 Amdt 39-10284. The directive requires repetitive inspection requirements as specified in the requirement document until a terminating modification action is implemented. The amendment became effective on 21 May 1998.
The AD imposes specific obligations on the operators and maintenance personnel of Boeing 747 series aircraft. Operators must ensure that their aircraft meet the specified inspection and repair requirements to maintain airworthiness. Maintenance personnel must follow the detailed technical requirements and procedures outlined in the FAA AD to carry out inspections and any necessary repairs. Compliance with these directives is critical for ensuring the safety of the aircraft and its occupants. The AD also requires operators to maintain records of all inspections and repairs carried out in accordance with the directive.
Failure to comply with the provisions of the AD can result in significant consequences. Non-compliance may lead to the grounding of the aircraft until the necessary inspections and repairs are completed. Furthermore, the AD stipulates that any failure to adhere to the specified requirements can result in penalties and legal action. Under the Civil Aviation Act 1988, individuals and companies found in breach of airworthiness directives may face fines, imprisonment, or both. The specific penalties can vary based on the severity of the breach and the circumstances surrounding the non-compliance. It is essential for operators and maintenance personnel to fully understand and adhere to the requirements of the AD to avoid these severe repercussions.