COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 747 Series Aeroplanes
AD/B747/208 Wing Front Spar Web at Inboard Engine Struts 8/99
Applicability: Model 747-100, 747-200, and 747-SP series aircraft; as listed in Boeing Service Bulletin 747-57A2303 Revision 1.
Requirement: Action in accordance with the technical requirements of FAA AD 99-10-09 Amdt 39- 11162.
Compliance: As specified in the Requirement Document for the initial and repetitive inspection requirements with a revised effective date of 12 August 1999.
This Airworthiness Directive becomes effective on 12 August 1999.
Background: The FAA received reports of fatigue cracks on the aft surface of the wing front spar web. Such fatigue cracking could result in a fuel leak, and consequent increased risk of fire.
Overview
The Civil Aviation Regulations 1998, amended through the legislative instrument F2006B03107, address specific safety concerns associated with Boeing 747 Series aeroplanes, particularly focusing on the integrity of the wing front spar web at inboard engine struts. This legislation was enacted to mitigate the risk of fatigue cracks on the aft surface of the wing front spar web, which could lead to fuel leaks and subsequently increase the risk of fire. The directive applies to the Model 747-100, 747-200, and 747-SP series aircraft, as detailed in Boeing Service Bulletin 747-57A2303 Revision 1. The Federal Aviation Administration (FAA) issued the directive, and it became effective on 12 August 1999, requiring compliance with the technical requirements outlined in FAA AD 99-10-09 Amdt 39-11162. The overarching policy objective is to ensure the ongoing airworthiness and safety of the specified aircraft models by mandating specific inspection and maintenance actions.
Scope and Application
The Civil Aviation Regulations 1998, specifically PART 39 - 105, outlines the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, with AD/B747/208 being a critical directive concerning Boeing 747 series aeroplanes. This legislation applies to the Model 747-100, 747-200, and 747-SP series aircraft, as detailed in Boeing Service Bulletin 747-57A2303 Revision 1. The directive mandates compliance with the technical requirements stipulated in FAA AD 99-10-09 Amendment 39-11162, which involves action on the wing front spar web at inboard engine struts. The directive requires adherence to the specified inspection requirements as outlined in the Requirement Document, with an effective date of 12 August 1999. This directive is intended to address reports of fatigue cracks on the aft surface of the wing front spar web, which could lead to fuel leaks and increased fire risk. The directive applies nationally within Australia, under the jurisdiction of CASA, ensuring all operators of the specified aircraft models comply with the safety measures outlined in this directive.
Key Provisions
The Civil Aviation Regulations 1998, particularly in Part 39 - 105, mandate specific safety measures for certain aircraft types under the authority of the Civil Aviation Safety Authority (CASA). One such directive, AD/B747/208, pertains to Boeing 747 Series Aeroplanes, specifically focusing on the wing front spar web at the inboard engine struts (section 1). This directive applies to the Model 747-100, 747-200, and 747-SP series aircraft, as detailed in Boeing Service Bulletin 747-57A2303 Revision 1 (section 2). The requirement outlined in the directive necessitates compliance with the technical specifications of FAA AD 99-10-09 Amendment 39-11162 (section 3). Compliance with this directive involves adhering to the inspection requirements specified in the Requirement Document, with a revised effective date of 12 August 1999 (section 4). The Airworthiness Directive itself became effective on the same date (section 5).
The obligations imposed by this directive on the operators of Boeing 747 Series Aeroplanes include ensuring that the specified inspections and any necessary repairs or modifications are conducted in accordance with the detailed technical requirements provided by the Federal Aviation Administration (FAA). Operators must ensure that all actions are carried out by qualified personnel and documented properly to maintain the aircraft's airworthiness status. This includes performing initial and repetitive inspections as stipulated in the Requirement Document to detect and address any potential fatigue cracks on the aft surface of the wing front spar web.
Failure to comply with the provisions of this Airworthiness Directive may result in serious safety risks, including the potential for fuel leaks and an increased risk of fire. The legislation does not explicitly detail offences or penalties within the text provided, but non-compliance with Civil Aviation Regulations can lead to enforcement actions by CASA, which may include fines, grounding of the aircraft, or other regulatory penalties. The specific penalties for breaches would be determined in accordance with the broader Civil Aviation Act 1988 and associated regulations, which may include substantial fines and potential imprisonment for serious safety violations.