I, PHILIPPA JILLIAN SPENCE, Director of Aviation Safety, on behalf of CASA, make this instrument under regulation 33B of the Civil Aviation Regulations 1988.

[Signed P. Spence]

Pip Spence
Director of Aviation Safety

23 March 2026

Civil Aviation Orders 100.23 and 100.24 Amendment Instrument 2026

1 Name of instrument

  This instrument is the Civil Aviation Orders 100.23 and 100.24 Amendment Instrument 2026.

2 Commencement

  This instrument commences on the day after it is registered.

3 Amendment of Civil Aviation Orders 100.23 and 100.24

  Each Civil Aviation Order mentioned in the title of a Schedule to this instrument is amended in accordance with the Schedule.

Schedule 1 Civil Aviation Order 100.23

[1] Before subsection 1

insert

1A Name of instrument

 1A.1 This instrument is Civil Aviation Order 100.23 (Airworthiness Authorities — General) Instrument 2007.

 1A.2 This instrument may be cited as Civil Aviation Order 100.23.

 1A.3 A reference in a CASA instrument (being an instrument issued by CASA under a statutory power to issue the instrument) to Section 100.23 of the Civil Aviation Orders is a reference to this instrument.

1B Definitions

Note   In this instrument, certain terms and expressions have the same meaning as they have in the Civil Aviation Act 1988 and the regulations. These include CAR, CASA and Director.

  In this Order:

authority means airworthiness authority.

Note   airworthiness authority is defined in regulation 2 of CAR as meaning an authority under regulation 33B of CAR.

relevant Order, for an application for an airworthiness authority, means the Civil Aviation Order mentioned in subsection 1 for the class of airworthiness authority to be issued.

[2] Subsection 1

omit

Aircraft Maintenance Engineer Civil Aviation Order 100.26;
Examiner Authority

[3] Paragraph 2.1

substitute

 2.1 An applicant for an airworthiness authority must make the application using one of the following application forms, as applicable for the class of the airworthiness authority, and submit the form to CASA:

(a) Application for Initial Issue or Amendment to Scope of a Maintenance Authority;

(b) Application for Initial Issue of, or Additional Method to, a Non-Destructive Testing Authority;

(c) Application for Initial Issue or Amendment of an Aircraft Weight Control Authority.

 2.1A If the relevant Order specifies particular experience or qualifications to be held by the applicant, the applicant must provide full details of such experience or qualifications with the application form.

[4] Paragraph 3.1

omit

applicable Civil Aviation Order

insert

relevant Order

[5] Paragraph 4.3

substitute

 4.3 During the period of validity of the authority, the holder must notify CASA, in writing, of any change of address so that CASA may communicate with the holder in relation to the authority if required.

[6] Further amendments

Schedule 2 Civil Aviation Order 100.24

[1] Before subsection 1

omit

This Civil Aviation Order is to be read in conjunction with Civil Aviation Order 100.23.

insert

1A Name of instrument

 1A.1 This instrument is Civil Aviation Order 100.24 (Maintenance Authority) Instrument 2007.

 1A.2 This instrument may be cited as Civil Aviation Order 100.24.

 1A.3 A reference in a CASA instrument (being an instrument issued by CASA under a statutory power to issue the instrument) to Section 100.24 of the Civil Aviation Orders is a reference to this instrument.

Note   This Civil Aviation Order is to be read in conjunction with Civil Aviation Order 100.23.

1B Definitions

Note   In this instrument, certain terms and expressions have the same meaning as they have in the Civil Aviation Act 1988 and the regulations. These include aircraft engineer licence, CAR, Director and RPA.

  In this Order:

maintenance authority means an airworthiness authority to carry out maintenance on aircraft.

Note   airworthiness authority is defined in regulation 2 of CAR as meaning an authority under regulation 33B of CAR.

[2] Paragraph 1.1

substitute

 1.1 Subject to paragraph 1.1A, unless otherwise approved by the Director, an applicant for a maintenance authority must hold an aircraft engineer licence.

 1.1A Paragraph 1.1 does not apply to an applicant for a maintenance authority that is for maintenance on RPA.

[3] Subsection 2

omit

2 Application for authority

  Application for an authority should be made on Form 350

insert

2 Application for maintenance authority

An application for a maintenance authority must be made using the application form Application for Initial Issue or Amendment to Scope of a Maintenance Authority

[4] Paragraph 3.1

omit

his or her

[5] Further amendments