Explanatory Statement
Civil Aviation Regulations 1988
Revocation of Airworthiness Directives
Legislation
Under section 98 of the Civil Aviation Act 1988, the Governor-General may make regulations for the purposes of the Act and in the interests of the safety of air navigation. Under regulation 39.001 of the Civil Aviation Safety Regulations 1998, CASA may issue airworthiness directives (ADs) for kinds of aircraft or aeronautical products. Subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998 provides that an AD is a disallowable instrument for the purposes of section 46A of the Acts Interpretation Act 1901. Therefore, in accordance with section 6 of the Legislative Instruments Act 2003, an AD is a legislative instrument.
Under Annex 8 to the Convention on International Civil Aviation, the State of Design has overall responsibility for continuing airworthiness of an aircraft type, and must provide any information necessary to ensure the continuing airworthiness of a type to appropriate States of Registry. ADs (and their equivalents) are the most common form of continuing airworthiness information, and are issued by most ICAO Contracting States.
The State of Registry of an individual aircraft is responsible for its continuing airworthiness. Under Annex 8, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft. When a State of Design issues an AD against a type of aircraft on the Australian Register, CASA, as Australia’s national airworthiness authority, must assess that information and, if appropriate, issue an Australian AD to mandate the requirements of the State of Design.
State of Design ADs issued on or after 1 October 2009 are defined as ADs per Civil Aviation Safety Regulations Part 39.001A.
AD/P68/43 Amdt 5
A State of Design airworthiness directive issued on or after 1 October 2009 is defined as an airworthiness directive per CASR Part 39.001A. The requirements of this airworthiness directive have been superseded by EASA AD 2010-0051, issued
25 March 2010.
AD/RAD/76 Amdt 1
A State of Design airworthiness directive issued on or after 1st October 2009 is defined as an airworthiness directive per CASR Part 39.001A. The requirements of this airworthiness directive have been superseded by FAA AD 2010-07-02 dated
17 March 2010.
AD/HS 125/1
This AD was raised in 1966 against Hawker Siddeley Aviation Service Bulletin (SB) 125-57-21 requiring a one-time inspection of flight control castings. Compliance was required by 31 March 1966.
As this AD has been promulgated for an extended period of time it is considered to be no longer required. This AD is therefore cancelled.
AD/HS 125/2
This AD was raised in 1966 against Hawker Siddeley Aviation Service Bulletin (SB) 125-53-2 requiring a modification to increase fatigue life. Compliance was required before 2000 hours total flight time.
As this AD has been promulgated for an extended period of time it is considered to be no longer required.
AD/HS 125/3
This AD was raised in 1966 against Hawker Siddeley Aviation Service Bulletin (SB) 125-27-41 requiring rework of the top wing skin. Compliance was required within 100 hours flight time, or before 31 October 1966, whichever is the earlier.
As this AD has been promulgated for an extended period of time it is considered to be no longer required. This AD is therefore cancelled.
AD/HS 125/4
This AD was raised in 1966 against Hawker Siddeley Aviation Service Bulletin 21-28 requiring repositioning of the safety and inward relief valve. Compliance was required forthwith.
As this AD has been promulgated for an extended period of time it is considered to be no longer required. This AD is therefore cancelled.
AD/HS 125/6
This AD was raised in 1967 against Hawker Siddeley Aviation Service Bulletin (SB) 125-57-18 requiring a modification to prevent fouling of the aileron “A” lever. Compliance was required within 100 hours time in service.
As this AD has been promulgated for an extended period of time it is considered to be no longer required. This AD is therefore cancelled.
AD/HS 125/7
This AD was raised in 1967 against Hawker Siddeley Aviation Service Bulletin (SB) 125-32-60 requiring a modification to prevent nose wheel steering disconnect.
As this AD has been promulgated for an extended period it is considered no longer required. This AD is therefore cancelled.
AD/HS 125/8
This AD was raised in 1967 against Hawker Siddeley Aviation Service Bulletin (SB) 125-53-22 requiring a modification to protect the engine mounting beam from damage and corrosion during service. Compliance was required within 500 hours TIS.
As this AD has been promulgated for an extended period it is considered no longer required. This AD is therefore cancelled.
AD/EC 135/16
A State of Design airworthiness directive issued on or after 1 October 2009 is defined as an airworthiness directive per CASR Part 39.001A. The requirements of this airworthiness directive have been superseded by EASA AD 2010-0058, issued
30 March 2010.
AD/GBK 117/19
A State of Design airworthiness directive issued on or after 1 October 2009 is defined as an airworthiness directive per CASR Part 39.001A. The requirements of this airworthiness directive have been superseded by EASA AD 2010-0058, issued
30 March 2010.
Consultation
No consultation with the Australian public has taken place on these AD cancellations. The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.
The AD has been made by the Manager, Continuing Airworthiness in the Airworthiness and Engineering Branch, on behalf of CASA, in accordance with subsection 94 (1) of the Act.
[Instrument number CASA ADCX 005/10]