AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B767/85 Amdt 3 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.
Boeing 767 Series Aeroplanes
AD/B767/85
Amdt 4
MLG Outer Cylinder Aft Trunnion 4/2002
Applicability: Model 767 series aircraft with line numbers 001 through 605, on which the terminating action required by paragraph (e) of the Requirement 3 document has not been accomplished.
Requirement: 1. Action in accordance with the technical requirements of FAA AD T95-20-51.
2. Action in accordance with the technical requirements of FAA AD 95-19-10 Amdt 39-9372.
3. Action in accordance with the technical requirements of FAA AD 2002-01-13 Amdt 39-12607.
Note 1: Compliance with the requirements of Boeing Service Bulletin 767-32A0148 Revision 2, dated 30 November 2000, constitutes terminating action for the inspection requirements of this Directive.
Note 2: Compliance in accordance with “Part 4-Terminating Action” of the Accomplishment Instructions of Boeing Alert Service Bulletin 767-32A0192, dated 31 May 2001, constitutes terminating action for the inspection requirements of this Directive.
Compliance: For Requirement 1: As specified in the Requirement Document with the initial inspection to be performed before 30 September 1995; until commencement of compliance with Requirement 3.
For Requirement 2: As specified in the Requirement Document; until commencement of compliance with Requirement 3.
For Requirement 3: As specified in the Requirement Document, with a revised effective date of 18 April 2002.
The compliance times remain unchanged for Requirements 1 and 2. This Airworthiness Directive becomes effective on 18 April 2002.
Boeing 767 Series Aeroplanes
AD/B767/85 Amdt 4 (continued)
Background: The FAA issued an AD in response to several reports of fractures of the outer cylinder aft trunnion due to stress corrosion cracking. Subsequent to the above reports, the FAA received an additional report of the collapse of the main landing gear on a Model 767-300 series aircraft. Investigation revealed that this latest fracture differed from those reported previously in that it initiated at the crossbolt hole, and additional inspections in an expanded area are now required.
Amendment 1 required inspections to detect cracking and corrosion of the aft trunnion of the outer cylinder of the main landing gear, and various follow-on actions. It also provided for termination of the inspections by repairing the outer cylinder and installing new aft trunnion bushes.
Amendment 2 clarified an inspection requirement of FAA AD 96-03-02 R1. Amendment 3 required implementation of the previously optional terminating action.
Amendment 4 is issued in response to a new FAA AD which prohibits the use of a particular corrosion inhibiting compound during accomplishment of the terminating action.
Amendment 3 of this Airworthiness Directive became effective on 30 January 1997. Amendment 2 of this Airworthiness Directive became effective on 20 June 1996.
The original issue of this Airworthiness Directive became effective on 30 September 1995.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 8 March 2002
The above AD is notified in the Commonwealth of Australia Gazette on 27 March 2002.
Overview
The Airworthiness Directive AD/B767/85 Amdt 4 was issued by the Civil Aviation Safety Authority (CASA) on 8 March 2002 and became effective on 18 April 2002. This Airworthiness Directive was enacted in response to the Federal Aviation Administration's (FAA) reports of fractures in the outer cylinder aft trunnion of Boeing 767 series aircraft due to stress corrosion cracking, as well as the collapse of the main landing gear on a Model 767-300 series aircraft. This legislation aims to ensure the safety of Boeing 767 series aircraft by requiring specific actions to address the identified issues. The policy objective of this Airworthiness Directive is to mandate corrective actions for the affected aircraft to prevent further incidents related to the identified unsafe conditions.
Scope and Application
This Airworthiness Directive applies specifically to Boeing 767 series aeroplanes with line numbers ranging from 001 through 605, provided that these aircraft have not yet completed the terminating actions outlined in the requirements of this directive. The AD mandates compliance with technical requirements detailed in several FAA Airworthiness Directives and related Boeing Service Bulletins. The directive requires inspections and actions to address stress corrosion cracking in the aft trunnion of the main landing gear outer cylinder. Compliance with certain Boeing Service Bulletins and Alert Service Bulletins can terminate the inspection requirements under this directive. The directive is effective from 18 April 2002 and pertains to the Commonwealth of Australia, administered by the Civil Aviation Safety Authority (CASA). The AD revokes a previous version, AD/B767/85 Amdt 3, and introduces updated requirements to enhance aircraft safety in response to new findings related to the identified unsafe condition.
Key Provisions
The Airworthiness Directive (AD) AD/B767/85 Amdt 4, issued by the Civil Aviation Safety Authority (CASA) delegate, primarily targets Boeing 767 series aircraft with line numbers 001 through 605 that have not yet completed the terminating actions specified in previous ADs. The AD mandates compliance with specific technical requirements and actions as outlined in FAA ADs T95-20-51, FAA AD 95-19-10 Amdt 39-9372, and FAA AD 2002-01-13 Amdt 39-12607 (sections 1 to 3 under "Requirement"). It also acknowledges that compliance with certain Boeing Service Bulletins and Alert Service Bulletins can act as terminating actions for the inspection requirements of this directive (Notes 1 and 2 under "Requirement"). The compliance deadlines are set forth in the "Compliance" section, with an overall effective date of 18 April 2002 for this Amendment 4.
The AD imposes specific obligations on the operators of the affected Boeing 767 series aircraft. These obligations include performing inspections and actions in line with the specified FAA ADs and CASA ADs, with particular attention to the technical requirements and instructions provided. Operators must ensure that the actions are completed within the stipulated timeframes and in accordance with the guidelines set out in the AD. The AD also requires operators to maintain records of compliance and ensure that all personnel involved in the inspection and repair processes are adequately trained and certified.
Failure to comply with the AD can result in serious consequences. The AD does not explicitly state the penalties or legal consequences for non-compliance, but non-compliance with CASA directives can typically lead to enforcement actions by CASA, which may include fines, suspension of airworthiness certificates, or other regulatory actions. The severity of the penalties may depend on the extent and nature of the non-compliance, as well as any resulting safety risks. Operators are expected to adhere strictly to the AD to ensure the continued airworthiness and safety of their aircraft.