The T-Jet is the official personal aircraft of the Teen Titans. There have been many models and variations of the T-Jet over the years, and nearly every incarnation of the team had access to one of them.
The T-Jet used by the New Teen Titans underwent frequent overhauls courtesy of mechanical whiz Cyborg. To date, this version of the T-Jet was arguably the most sophisticated and technology advanced model.
The San Francisco Titans also had a T-Jet which, like its predecessors, was heavily modified by Cyborg. The first T-Jet belonging to this team was downed during the Amazons Attack affair, but was replaced soon after.
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