Advisory Circulars

Advisory Circulars (AC) give advice and guidance on how to meet the Civil Aviation Safety Regulations (CASR). Each AC explains certain rules or standards in more detail.

Search by keyword such as the title or number of an AC. You can also use the category or rule part filters to show AC related to a particular topic or Part of CASR.

Showing 111 - 120 of 200 results

AC 21-19 - Aircraft modification - flight test considerations

Updated:

Advisory Circular AC 21-19 provides background information and general technical guidance for flight test…

Advisory Circular Airworthiness Part 21 of CASR Certification / Airworthiness Guidance materials Version
1.1
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AC 21-19 Aircraft modification - flight test considerations (PDF, 383.79 KB)

AC 21-21 - Flight test considerations of aircraft production

Updated:

Advisory Circular AC 21-21 provides background information and guidance regarding the production flight test…

Advisory Circular Airworthiness Part 21 of CASR Certification / Airworthiness Guidance materials Version
1.1
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AC 21-21 Flight test considerations of aircraft production (PDF, 356.66 KB)

AC 21-12 - Classification of design changes

Updated:

Advisory Circular AC 21-12 provides guidance on the classification of design changes for the purposes of approval under…

Advisory Circular Airworthiness Part 21 of CASR Guidance materials Version
1.1
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AC 21-12 Classification of design changes (PDF, 1.12 MB)

AC 21-24 - Flight recorder and underwater locating device maintenance

Updated:

Advisory Circular AC 21-24 is to provide guidance maintenance of aircraft flight data recorders (FDRs), cockpit voice…

Advisory Circular Airworthiness Part 21 of CASR Certification / Airworthiness Guidance materials Version
1.1
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AC 21-24 Flight recorder and underwater locating device maintenance (PDF, 656.55 KB)

AC 21-10 - Experimental certificates

Updated:

Advisory circular AC 21-10 provides guidance and information to applicants applying for experimental certificates.

Advisory Circular Airworthiness Part 21 of CASR Certification / Airworthiness Guidance materials Version
4.3
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AC 21-10 Experimental certificates (PDF, 666.87 KB)

AC 21-50 - Approval of software and electronic hardware parts

Updated:

Advisory Circular AC 21-50 provides guidance on the approval of non-integrated aircraft software and electronic…

Advisory Circular Airworthiness Part 21 of CASR Certification / Airworthiness Guidance materials Version
1.1
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AC 21-50 Approval of software and electronic hardware parts (PDF, 1.02 MB)

AC 21.J-01 - Approved design organisations

Updated:

Advisory Circular AC 21.J-01 provides guidance and acceptable means of compliance with the requirements of Subpart 21.J…

Advisory Circular Airworthiness Version: 1.1
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AC 21.J-01 Approved design organisations (PDF, 897.45 KB)
Online version available at: https://www.casa.gov.au//resources-and-education/publications/guidance-material/advisory-circulars
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