To work with CASA, each person or organization needs to have an Aviation Reference Number (ARN). This number acts like a customer or account reference when working with CASA. As a result, an Aviation Reference Number is needed for any official interaction. Additionally, having an ARN makes communication with CASA easier and keeps records well-organized.
The following entities, specifically, must obtain their own Aviation Reference Numbers:
Each legal entity receives only one Aviation Reference Number. However, CASA does not issue Aviation Reference Numbers to business names, consortiums, partnerships, or trusts. Instead, they are issued solely to single legal entities.
Applying for an Aviation Reference Number is straightforward. The fastest method is through the My CASA Portal. If you’re new to the portal, you’ll first need to create an account. Once logged in, select the option to create an Aviation Reference Number . This approach saves time and simplifies the process.
To get an Aviation Reference Number the individual must provide at least one form of identification and the following are Acceptable IDs:
If you’re using a foreign passport, you need to be physically present in Australia during your application.
Several types of businesses and organizations are eligible to apply for an Aviation Reference Number they include the following:
For an organization ARN, you need a myCASA account, an individual Aviation Reference Number , and authorization to represent the business. Additionally, you’ll need the organization’s Australian Business Number (ABN) on hand.
By following these steps, individuals and organizations can easily obtain their ARNs and interact smoothly with CASA.
If you’re located outside of Australia and wish to apply for an Aviation Reference Number (ARN) from CASA (Civil Aviation Safety Authority), you can still complete the process. Here’s a step-by-step guide:
An ARN is essential for interacting with CASA and is required for activities such as obtaining a Remote Pilot Licence (RePL) or other aviation-related certifications.
Download the CASA Form 1162: Aviation Reference Number Application – Individual from the CASA website:
Download the CASA Form 1170: Aviation Reference Number Application – Organization from the CASA website:
Once CASA processes your application, they will issue an ARN and send confirmation via email or post. Processing times vary but typically take up to 10 business days.
If you need assistance during the process, you can contact CASA’s Client Services at +61 131 757 or via email.

ARN on My CASA Portal