Changes to part 39
Mandatory Compliance with State of Design ADs
From the 1 October 2009, as a result of recent changes to CASR Part 39, CASA will no longer issue Australian ADs that mirror State of Design ADs. As a result, registered operators will be required to ensure their aircraft complies with State of Design ADs applicable to their aircraft and equipment. For example, if you own Cessna aircraft which is designed in the USA, you must comply with all the applicable ADs issued by the FAA. This also applies to ADs for the engine and propeller which are also both designed in the USA.
How will this work?
If your have an aircraft model issued with a Certificate of Registration prior to 1 October 2009, you must comply with State of Design ADs issued after 1 October 2009.
If you propose to operate an aircraft model that has never been on the Australian aircraft register prior to 1 October 2009 then you must comply with all State of Design ADs issued before and after the 1 October 2009.
All aircraft must still comply with any applicable Australian AD.
How do I obtain a State of Design AD?
These can be obtained from either the CASA website or the National Airworthiness Authority (NAA) website. On the CASA website the aircraft model and equipment list will contain any existing Australian ADs and the State of Design ADs.
You may prefer to obtain State of Design ADs directly from the NAA. To do this, it is necessary to establish the applicable NAA. The links to the State of Design NAA will soon be located on the CASA website.
Will CASA send me the State of Design ADs?
CASA will only mail or fax emergency ADs to registered operators. CASA will still provide a subscriber email service.
What other changes will occur?
An alternative means of compliance (AMOC) against a State of Design AD approved by the NAA will now be accepted by CASA.
If you enter a foreign manufactured aircraft on the Australian aircraft register, the Australian AD is taken to have been complied with if the State of Design AD has the equivalent requirements as the Australian AD.
Where can I get more information?
Advisory circular AC 39-01(4) Airworthiness Directives is available on the CASA website.