FAQ (Frequently Asked Questions)

How do I register for iSTARS 4.0

1. If you already have a username and password for the ICAO Secure Portal:

  • Sign in to the ICAO Secure Portal at https://portal.icao.int using your secure site login credentials.
  • Select Profile at the top of your screen; a new window will open.
  • From the left-hand menu, select Group Subscribe.
  • Enter istars4 as the group name and provide a brief justification for your request.
  • Click the Submit Changes button.

Please allow up to 48 hours for your request to be reviewed. You will receive an email confirmation regarding whether access to the group has been granted or denied.

2. If you do NOT have a username and password for the ICAO Secure Portal:

Once your request has been reviewed, you will receive an email confirmation indicating whether access has been granted or denied. If granted, the email will include your username and password. In case of any issues, please contact icaoportaladmin1@icao.int for assistance.

3. If you are a user of both the ICAO Secure Portal and iSTARS 4.0 but are unable to access iSTARS 4.0:

Ensure that you are using the same username and password as the ICAO Secure Portal when logging in to iSTARS 4.0 at https://istars.icao.int/Sites/Account/Login.

Password Reset Instructions

  • Please note that all user passwords expire within three (3) months. All users are informed automatically by email seven days before their passwords expire.
  • Steps to recover password:
  • From the browser, navigate to https://login.icao.int/my.policy
  • At the login page, on your profile click on the Password reset link.
  • Enter your e-mail address or your user ID. Your User ID: username
  • Enter the answer the image verification located at the bottom of the page. Then click “Send me a link to reset my password”.
How does ICAO choose the "official" set of accidents every year?

Aircraft accidents are reviewed and validated by the ICAO Occurrence Validation Study Group (OVSG) using definitions provided in Annex 13 — Aircraft Accident and Incident Investigation.

What can I do if I cannot find any data for a particular country?

If you're unable to find data for a particular country, please note that we only show data for ICAO Member States.

Contact Us

Do you have any questions concerning the content, functions, or usage of iSTARS data? Please address any comments concerning the content of the site to
istars@icao.int