Part 4B of CAR Defect reporting

Rule status


Part 4B of Civil Aviation Regulations (CAR) sets out the rules around reporting defects in aircraft and aircraft components, including:

  • when a person must report major defects in aircraft to CASA
  • what to write in the report
  • what CASA can do after receiving such a report.

Who it affects

Part 4B of CAR affects:

  • aircraft owners and operators
  • aviation personnel
  • maintenance personnel
  • maintenance organisations.

Non-legislative instruments

Non-legislative instruments apply to a particular person. There are some exemptions to regulatory requirements in aviation regulations or a Manual of Standards listed here.

Non-legislative Instruments related to this part will display in this space or you can view our list of non-legislative instruments.

Guidance material

Advisory material provides advice and guidance to explain particular regulatory requirements. Guidance material relating to this part will appear in this space or you can view all our guidance material.

2 guidance material available


CAAP 30-4 provides guidance to applicants when requesting changes or applying for a COA. It details acceptable procedures for CoA holders to maintain their certificates and includes internationally recognised maintenance terminology.

Civil Aviation Advisory Publication Version: 3.0

Advisory circular AC 20-06 provides guidance and information to people reporting defects to CASA in accordance with Part 4B of CAR or Division 42.C.4 and Subdivision 42.D.6.2 of CASR.

Advisory Circular Version: 1.0
Date published:
Online version available at:
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