COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 767 Series Aeroplanes
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B767/110 and issues the following AD under subregulation 39.1 (1) of CAR 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.
AD/B767/110
Amdt 1
Nacelle Strut Diagonal Brace 7/2000
Applicability: Model 767 series aircraft; as listed in Boeing Alert Service Bulletin 767-54A0094, dated May 22 1998.
Requirement: Action in accordance with the technical requirements of FAA AD 2000-07-05 Amdt 39-11659.
Note: Replacement of the one-piece diagonal brace with the new three-piece diagonal brace, in accordance with Part 3 of the Accomplishment Instructions of Boeing Alert Service Bulletin 767-54A0094 constitutes terminating action for the requirements of this Directive.
Compliance: As specified in the Requirement document for the inspection and modification requirements, with a revised effective date of 13 July 2000.
This Amendment becomes effective on 13 July 2000.
Background: The FAA received a report indicating that a fractured lug of the diagonal brace of the nacelle strut was found during a routine visual inspection of a Model 767 series aircraft. Undetected cracking of the diagonal brace of the nacelle strut could result in failure of the diagonal brace and consequent fatigue failure of a secondary load path and separation of the engine and strut.
Amendment 1 is issued in response to a new FAA AD which requires accomplishment of the previously optional terminating action. This action was prompted by a report that a fractured diagonal brace lug was found during a routine maintenance inspection.
Bernard Malcolm Hole
Delegate of the Civil Aviation Safety Authority 2 June 2000
The above AD is notified in the Commonwealth of Australia Gazette on 14 June 2000.
Overview
The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), encompass various regulations aimed at ensuring the safety and efficiency of aviation operations in Australia. Specifically, Part 39 - 105 of these regulations includes Airworthiness Directives (ADs) that are essential in maintaining the safety standards of aircraft. One such directive, AD/B767/110 Amendment 1, was enacted in 2000 to address safety concerns identified in Boeing 767 series aircraft. This directive was introduced following a report of a fractured lug on the diagonal brace of the nacelle strut, which could potentially lead to serious safety issues such as engine separation. The policy objective of this directive is to ensure that corrective actions are taken to mitigate such risks, thereby enhancing the overall safety of civil aviation.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105 concerning the Civil Aviation Safety Authority’s schedule of airworthiness directives, applies to the Boeing 767 series aeroplanes within the Australian jurisdiction. The legislation mandates the requirements for ensuring the airworthiness of these aircraft, focusing on specific technical aspects such as the nacelle strut diagonal brace. This directive applies to all Model 767 series aircraft as listed in the Boeing Alert Service Bulletin 767-54A0094, dated May 22, 1998. The AD/B767/110 Amendment 1, issued on July 7, 2000, mandates actions to address the unsafe condition of the diagonal brace in the nacelle strut, as specified by the Federal Aviation Administration’s AD 2000-07-05 Amendment 39-11659. The directive became effective on July 13, 2000, requiring compliance with the inspection and modification requirements outlined in the relevant Boeing bulletin. The AD revokes the previous directive AD/B767/110 and establishes a new compliance timeline, underscoring the importance of timely action to prevent potential hazards such as fatigue failure and engine separation.
Key Provisions
The Civil Aviation Regulations 1998, specifically in PART 39 - 105, contain an Airworthiness Directive (AD) issued under subregulation 39.1 (1) of CAR 1998. This AD pertains to Boeing 767 series aircraft and is aimed at addressing a specific safety concern identified in the nacelle strut diagonal brace (AD/B767/110). The AD mandates certain actions to be taken in response to a reported fracture of the diagonal brace lug during a routine inspection. These actions are aligned with the technical requirements of FAA AD 2000-07-05 Amdt 39-11659, which includes the replacement of the one-piece diagonal brace with a new three-piece diagonal brace according to the instructions in Part 3 of the Accomplishment Instructions of Boeing Alert Service Bulletin 767-54A0094. This replacement constitutes the terminating action for the requirements of this directive.
The obligations imposed by this AD on the parties and entities it governs are to ensure that the specified actions are carried out in accordance with the detailed requirements outlined in the AD and within the timeframe specified. Specifically, these obligations include conducting the necessary inspections and modifications as mandated by the AD. Compliance with these requirements is crucial to address the potential risk of undetected cracking in the diagonal brace, which could lead to serious safety issues such as fatigue failure of a secondary load path, engine separation, and other hazardous conditions.
Failure to comply with the AD can lead to significant consequences. While the AD itself does not explicitly outline specific offences, penalties, or consequences for non-compliance, it is important to note that non-compliance with airworthiness directives can result in serious regulatory repercussions. These may include enforcement actions by the Civil Aviation Safety Authority (CASA), potential grounding of the aircraft, and other administrative or legal penalties that may be imposed under broader aviation safety regulations. The seriousness of these consequences underscores the importance of adhering to the AD to maintain the airworthiness and safety of the aircraft.