Click to download the Adobe Release RPM. A dialog box will appear asking you where to save the file.
Save the .rpm file to your desktop and wait for the file to download completely.
In terminal, navigate to the desktop and install the downloaded rpm using the following command. This will copy the adobe GPG key to /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux and adds adobe-linux-i386 as a repository.
sudo rpm -Uvh adobe-release-i386-1.0-1.noarch.rpm
Install adobeair package using the following command. During Installation, yum will ask to import the GPG key. Press "y" and then "Enter".
sudo yum install adobeair
To get the most up-to-date AIR runtime in future, simply type # yum update adobeair in terminal. You do not need to repeat steps 1-4.
NOTE: If sudo does not work, use "su -", it prompts for root password.