Follow the steps to fill out the AU Form 1399 online.

1. Click the 'Get Form' button to obtain the form and open it in your preferred editor.
2. Enter your Aviation Reference Number (ARN) in the designated field. Ensure that you have an ARN, as it is essential for completing this form. If you do not have one, you must apply for it before proceeding.
3. Provide the aircraft details as noted on the aircraft data plate and the previous certificate of registration. This includes the registration mark (VH-), manufacturer, model, and serial number.
4. Fill in your contact details as the registration holder. This section requires your full name, email address, and phone number.
5. Select the reason for requiring a replacement certificate. Options include lost, stolen, destroyed, damaged, or updates to details on the registration certificate.
6. In the declaration section, confirm that all your statements are true and correct. Provide your ARN and GFA member number, if applicable. Make sure to read and acknowledge the implications of false statements.
7. Indicate your capacity when making the declaration (e.g., director, agent, etc.). If you are appropriating authority on behalf of an organization, ensure that any required authority documents are attached.
8. Select your payment option. You can choose to pay by credit card online or through direct deposit, ensuring you follow the instructions for each payment method carefully.
9. Review the completed form for accuracy and ensure all necessary documents are attached. Save your changes.
10. Submit the form by sending it with all supporting documents attached via email to returns@glidingaustralia.org or by post to the Gliding Federation of Australia Inc.

Complete your AU Form 1399 online today to ensure a seamless application process.