Go to Nar Shaddaa, and gather the parts to repair the Airspeeder (see that section above).

In order to get infinite influence for Atton, you need to install the Airspeeder Navigation Interface from Tienn Tubb's place and have Atton handle unlocking the security controls. Then, if it's not too late, you need to kill Kodin and get his Airspeeder Navigation Interface as well. Then you attempt to install it again but this time you can do it over and over again because the game doesn't take it up. It only works if you installed the Interface from Tienn Tubb's place first, then go get the other one.