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 91 - 105 of 194 results

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AC 21-09 - Special flight permits

Updated:

Advisory Circular AC 21-09 provides and information to applicants applying for special flight permits (SFP) in…

Advisory Circular Airworthiness Part 21 of CASR Guidance materials Version
4.1
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AC 21-09 Special flight permits (PDF, 374.1 KB)

AC 21-17 - Export airworthiness approvals

Updated:

Advisory Circular AC 21-17 provides guidance on applying for an export airworthiness approval for Class I, Class II or…

Advisory Circular Airworthiness Part 21 of CASR Guidance materials Version
3.1
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AC 21-17 Export airworthiness approvals (PDF, 310.89 KB)

AC 21-27 - Manufacturing approval overview

Updated:

Advisory Circular AC 21-27 provides guidance concerning Part 21 manufacturing authorisations of aircraft, aircraft…

Advisory Circular Airworthiness Part 21 of CASR Guidance materials Version
2.2
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AC 21-27 Manufacturing approval overview (PDF, 521.14 KB)

AC 66-03 - Engine ground run training and assessment

Updated:

Advisory Circular AC 66-03 provides guidance and information to personnel preparing and conducting engine ground run…

Advisory Circular Airworthiness Part 66 of CASR Guidance materials Version
3.1
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AC 66-03 Engine ground run training and assessment (PDF, 343 KB)

AC 20-01 - Software configuration management

Updated:

Advisory Circular AC 20-01 provides guidance for the management of software in aircraft systems.

Advisory Circular Airworthiness Guidance materials Version
1.1
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AC 20-01 Software configuration management (PDF, 712.17 KB)

AC 173-04 - Clarification of area navigation criteria

Updated:

Advisory Circular AC 173-04 provides clarification and guidance to the interpretation of the area navigation (RNAV)…

Advisory Circular Airspace Part 173 of CASR Guidance materials Version
2.2
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AC 173-04 Clarification of area navigation criteria (PDF, 332.16 KB)

AC 61-05 - Night VFR rating

Updated:

Advisory Circular AC 61-05 provides guidance on night VFR (NVFR) ratings as well as operations under NVFR. It covers…

Advisory Circular Flight operations Part 61 of CASR Guidance materials Version
1.1
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AC 61-05 Night VFR rating (PDF, 819.96 KB)

AC 21-39 - Design and fitting of gaseous oxygen systems

Updated:

Advisory circular AC 21-39 provides information and guidance to ensure that the fitting, or modification an aircraft’s…

Advisory Circular Airworthiness Part 21 of CASR Guidance materials Version
1.1
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AC 21-39 Design and fitting of gaseous oxygen systems (PDF, 418.48 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)
Online version available at: https://www.casa.gov.au//search-centre/advisory-circulars
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