Part 21 of CASR Certification and airworthiness requirements for aircraft and parts

Rule status

Current

Part 21 of the Civil Aviation Regulations (CASR) sets out the certification and airworthiness requirements for aircraft and aircraft parts. It includes rules relating to:

  • type certificates
  • type acceptance certificates
  • supplemental type certificates
  • production certificates
  • certificates of airworthiness
  • export airworthiness approvals.

Part 21 also covers the approval of aircraft engines, propellers, and certain materials and parts. It references the airworthiness certification standards mentioned in Parts 22-35. These include:

  • Part 22 - Sailplanes
  • Part 23 - Small Aeroplanes
  • Part 25 - Transport Category Aeroplanes
  • Part 26 - Primary/Intermediate category aeroplanes
  • Part 27 - Rotorcraft
  • Part 29 - Rotorcraft (Transport Category)
  • Part 31 - Manned free balloons
  • Part 32 - Engines for Very Light Aeroplanes
  • Part 33 - Aircraft Engines
  • Part 35 - Aircraft propellers.

Subpart 21.H

Subpart 21.H covers the certification of a new category of aircraft called Light Sport Aircraft (LSA). This includes aircraft used for aviation sport and recreational activities, such as:

  • ultra- light airplanes
  • gliders
  • balloons
  • powered parachutes
  • weight-shift control aircraft
  • gyroplanes.

Subpart 21.J

Subpart 21.J sets out the rules for certification and operations of approved design organisations (ADOs). The ADOs may carry out certain design and technical data approval functions regulated by Part 21, without further reference to CASA or an authorised person.

Who it affects

Part 21 of CASR affects anyone in the Australian aviation community involved in the design, manufacture and airworthiness certification of aircraft, aeronautical products and parts.

Legislative instruments

Legislative instruments include exemptions to regulatory requirements in aviation regulations or a Manual of Standards.

Exemptions may apply to a broad range of people.

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

8 legislative instruments available

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.

There are no non-legislative instruments available for this rule.

Guidance material

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

52 guidance material available

Updated:

Advisory Circular AC 21-36 provide guidance information on design, development and subsequent airworthiness approval of Global Navigation Satellite Systems GNSS equipment installations.

Advisory Circular Version: 2.3
Updated:

Advisory Circular AC 21-33 provides information and guidance to persons seeking to arrange the delivery of an aircraft to Australia.

Advisory Circular Version: 1.1
Updated:

Advisory Circular AC 21-34 provides information on Aircraft Flight Manuals (AFM), including approval of AFMs, changes to AFMs and AFM supplements.

Advisory Circular Version: 1.1
Updated:

Advisory Circular AC 21-35 provides one method of providing control and calibration requirements for tools and test equipment.

Advisory Circular Version: 1.1
Updated:

Advisory Circular AC 21-31 provides guidance to those applying for a Type Certificate for foreign aircraft types in accordance with CASR Subpart 21.29, where the automatic acceptance procedures of the Subpart do not apply.

Advisory Circular Version: 1.1
Updated:

Advisory Circular AC 21-38 provides guidance for the preparation or alteration of an electrical load analysis (ELA). It is appropriate in the absence of information from the type certificate or supplemental type certificate holder.

Advisory Circular Version: 2.1
Last updated date
Updated:
Online version available at: https://www.casa.gov.au//rules/regulatory-framework/casr/part-21-casr-certification-and-airworthiness-requirements-aircraft-and-parts
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