The TIE/x3 starfighter was a TIE testbed created by Sienar Fleet Systems.
Characteristics[]
It incorporated many of the design innovations from the TIE Advanced x1 and TIE Advanced x2 models, including higher performance ion engines than the standard TIE/LN starfighter, improved combat software, and inward-swept solar/radiator panels configured for higher pilot visibility.
However, its hullform was more consistent with the TIE fighter, rather than the experimental departures of the TIE/x1 and TIE/x2. It also lacked those models' hyperdrives.
Appearances[]
"Galaxywide NewsNets" — Star Wars Adventure Journal 5 (Mentioned only)