Federal Register of Legislation - Australian Government

Primary content

AD/ECUREUIL/10 Amdt 6 Airworthiness Directives/Pt 105 — Aircraft as made
Retirement Life - Fatigue Critical Components
Administered by: Infrastructure and Transport
Exempt from sunsetting by the Legislative Instruments Act 2003 s 54(2) item 9
Registered 19 Apr 2007
Tabling HistoryDate
Tabled HR08-May-2007
Tabled Senate09-May-2007
Date of repeal 19 Jul 2013
Repealed by CASA ADCX 012/13 - Revocation of Airworthiness Directives




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.

CASA has raised AD/ECURIEUIL/10 Amendment 6 to correct an unsafe situation on AS350 rotorcraft.  The referenced technical data for the AD has been revised by the manufacturer and the industry has requested that the AD be revised to reference the latest data.  The State of Design for this type, EASA, has not yet taken action to correct this unsafe condition.  As there are many examples of the type on the Australian register, CASA has developed an AD to correct the problem on Australian aircraft. 

CASA has not consulted with the Australian industry and public, as the industry requested the change be made to the current AD.

The Office of Regulatory Review has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the Manager, Airframes, in the Manufacturing, Certification and New Technologies Office, on behalf of CASA, in accordance with subsection 84A (2) of the Act.