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CASR Part 21 - Certification and airworthiness requirements for aircraft and parts
Part 21 of CASR deals with 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 and export airworthiness approvals. It also covers the approval of aircraft engines, propellers, and certain materials and parts. It calls up the airworthiness certification standards mentioned in Parts 22-35:
- 22 - Sailplanes
- 23 - Small Aeroplanes
- 25 - Transport Category Aeroplanes
- 26 - Primary/Intermediate category aeroplanes
- 27 - Rotorcraft
- 29 - Rotorcraft (Transport Category)
- 31 - Manned free balloons
- 32 - Engines for Very Light Aeroplanes
- 33 - Aircraft Engines
- 35 - Aircraft propellers.
Subpart 21.H: covers the certification of a new category of aircraft called Light Sport Aircraft (LSA). The LSA category will generally include aircraft used for aviation sport and recreational activities, such as ultra- light airplanes, gliders, balloons, powered parachutes, weight-shift control aircraft and gyroplanes. The proposed legislative requirements, which are simply an amendment of the existing Subpart 21.H and several consequential amendments to the Civil Aviation Orders, continue the approach taken in Part 21 whereby Australia's aircraft airworthiness requirements are generally harmonised with those of the USA Federal Aviation Regulations (FARs). The amendment to Subpart 21.H will incorporate the existing airworthiness acceptance criteria for aircraft potentially eligible for the LSA category contained in the current Civil Aviation Order (CAO) Part 95 exemption series, and in Part 21 and Parts or Part 200 - Exemptions.
Subpart 21.J: the new Subpart 21.J commenced on 1 March 2014. Subpart 21.J prescribes the rules for certification and operations of approved design organisations (ADOs), who may carry out certain design and technical data approval functions regulated by Part 21, without further reference to CASA or an authorised person. Any individual or body corporate may apply for a certificate of approval as an approved design organisation. The applicant is not required to hold a type certificate or production approval.
The new Subpart 21.J expands on the existing regulation 30 of CAR for design organisations to provide for a more systematic and comprehensive system for design approval by organisations. Consequently, coordination and management of many certification projects, currently mostly conducted by CASA, will be devolved to suitably rated ADOs. The scope of the design activities that CASA may authorise will depend on the ADO's demonstrated capabilities and the systems that the ADO has in place to carry out the activities
Who Part 21 affects
Part 21 affects anyone in the Australian aviation community involved in the design, manufacture and airworthiness certification of aircraft, aeronautical products and parts.
Subparts 21.J and 21.M post-implementation review (PIR)
On 1 March 2014, Subpart 21.J replaced the then current Instrument of Appointment with organisational approvals. The new rules set out the requirements for approval as an approved design organisation, as well as the associated privileges and obligations.
Standards Development project CS 13/12 was initiated to review the implementation of Subpart 21.J and to conduct a post-implementation review of Subpart 21.M.
Part 21 can be found in volume 1 of the Civil Aviation Safety Regulations 1998. Recent amendments to this Part may be listed in the Unincorporated Amendments.
Manual of Standards
The Part 21 Manual of Standards Instrument 2016 was made on 31 May 2016 and commences on 1 June 2016. Sections 8.5 and 13.1 of the instrument will be repealed at the end of 31 May 2017.
|AC 21-1(1)||Aircraft Airworthiness Certification Categories and Designations Explained||December 2000|
|AC 21-2(1)||Standard Certificates of Airworthiness||November 2010|
|AC 21-3(1)||Special Certificates of Airworthiness - Overview||November 2010|
|AC 21-4(2)||Amateur-Built Experimental Aircraft - Certification||September 2000|
|AC 21-05 v2.1||Limited Category Aircraft - certification||August 2017|
|AC 21-6(0)||Restricted Category Aircraft - Certification||October 1998|
|AC 21-7(0)||Primary Category Aircraft - Certification||June 2000|
|AC 21-08 v1.0||Approval of modification and repair designs under Subpart 21.M||February 2015|
|AC 21-09(2)||Special Flight Permits||March 2009|
|AC 21-10 v4.2 (pdf 387.82 KB)||Experimental certificates||March 2019|
|AC 21-11(1)||Amateur-Built (ABAA) Aircraft - Certification||September 2000|
|AC 21-12 v1.0||Classification of design changes||March 2015|
|AC 21-13(0)||Australian-Designed Aircraft - Type Certification||September 1999|
|AC 21-14 v4.1 (pdf 239.62 KB)||Production certificates||August 2018|
|AC 21-15 v3.0||Supplemental Type Certificates - Certification||March 2015|
|AC 21-16(0)||Approval of Materials, Parts, Processes and Appliances||September 1999|
|AC 21-17 v2.0||Export Airworthiness Approvals||August 2017|
|AC 21-18 v1.0||Design and maintenance of containers: transportation of live aquatic animals using compressed oxygen or compressed air||May 2015|
|AC 21-19 v1.0||Aircraft modification - flight test considerations||May 2015|
|AC 21-20(0)||Production Under Type Certificate Only||September 1999|
|AC 21-21 v1.0||Aircraft production - flight test considerations||May 2015|
|AC 21-22(0)||Approval of Imported Engines, Propellers, Materials, Parts and Appliances||September 1999|
|AC 21-24 v1.0||Flight recorder and underwater locating device maintenance||May 2015|
|AC 21-25 v5.0||Limited Category Aircraft - permit index||January 2017|
|AC 21-27 v2.0||Manufacturing Approval - Overview||August 2016|
|AC 21-28 v1.0||Permissible unserviceabilities - unrepaired defects (r. 21.007)||January 2015|
|AC 21-29(0)||Commercial Assistance During Construction of Amateur-Built Experimental Aircraft and Amateur-Built (ABAA) Aircraft||June 2000|
|AC 21-30(2)||Type Acceptance Certificates for Imported Aircraft||March 2009|
|AC 21-31(0)||Type Certificates for Imported Aircraft||December 1998|
|AC 21-33(0)||Delivery of Aircraft to Australia||September 1999|
|AC 21-34 v1.0||Aircraft flight manuals||May 2017|
|AC 21-35(1.1)||Calibration - Inspection and test equipment||August 2015|
|AC 21-36 v2.2||Global Navigation Satellite System (GNSS) Equipment: Airworthiness Guidelines||November 2014|
|AC 21-37(0)||Airworthiness Approval of Navigation or Flight Management Systems Integrating Multiple Navigation Sensors||February 2005|
|AC 21-38 v2.0||Aircraft Electrical Load Analysis and Power Source Capacity||September 2017|
|AC 21-40(0)||Measurement of Airspeed in Light Aircraft - Certification Requirements||April 2005|
|AC 21-41(0)||Light Sport Aircraft Certificate of Airworthiness||September 2005|
|AC 21-42 v2.0||Light sport aircraft manufacturers' requirements||May 2014|
|AC 21-43(0)||Experimental Certificates for Unmanned Aircraft||June 2006|
|AC 21-45 v2.2||Airworthiness Approval of Airborne Automatic Dependent Surveillance Broadcast Equipment||June 2015|
|AC 21-46 v3.0||Airworthiness Approval of Avionics Equipment||October 2014|
|AC 21-47 v1.1 (pdf 468.49 KB)||Flight test safety||March 2019|
|AC 21-50 v1.0||Approval of software and electronic hardware parts||May 2014|
|AC 21-99(1)||Aircraft Wiring and Bonding||September 2013|
|AC 21-601 v2.0||Australian Technical Standard Order Authorisation||March 2016|
|AC 21.J-01 v1.0||Approved design organisations||June 2014|
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Part 21 history
Part 21 of the CASR was made on 15 July 1998, with certain subparts taking effect on 1 October 1998 and the remainder on 1 December 1998.
The Part 21 history includes project and consultation activities conducted in relation to Part 21, including Subparts 21.H and 21.J.