Tyrant Jetliner computer is in the locked section of the Tyrant Jetliner. Jaron Namir, the leader of Tyrants, uses this computer to access the Killing Floor - a system containing data on all missions given to Tyrants by the Illuminati.
In Deus Ex: Icarus Effect and Deus Ex: The Fall, the protagonist Ben Saxon hacks into this computer to learn truth about the Tyrants. In the book, the computer contains lots of data, but in the game it contains just one e-mail.
You and I have had extensive conversations about replacing Joe Wexler. I'm not sure who, ultimately, approved Rainbird and at this point, it really does not matter. I've reviewed the AA reports from Operation Rainbird, and if this is how we needed to recruit Saxon to replace Wexler, then so be it.
Obviously, keeping Ben in the dark should be of the highest priority. You know how close the Team Six guys can get, especially when they've saved each other's asses a few times. We've buried the AA reports. I've reviewed the dossier on Saxon and do agree that he'll make a great addition to the team.
According to Deus Ex: Icarus Effect, the password to this computer is the name of Namir's sister, Melina.