Hal Jordan was a pilot at Broom Lake Air Force Base. During a fight between Kyle Rayner and Sinestro, his plane was damaged.
Alternate timeline
During the alternate timeline in the future of the fluctuations created by Chronos, Hal Jordan took John Stewart's place and helped the Justice League to find Enid Clinton husband and fix the timeline. After another fluctuation John Stewart was restored.
Hal Jordan was voiced by an uncredited Adam Baldwin.
It is unknown if Jordan was ever a Green Lantern in the DCAU sans his appearance in the altered timeline, as no mention is ever made of him and John Stewart is established as Earth's primary Green Lantern.