The people mover train at Miami International Airport wasn't operating Monday, a day after it went off the tracks.
MIA spokesman Greg Chin said he hopes the train will be back up and running later Monday.
The incident happened around noon Sunday when the train derailed near the airport's rental car center.
Chin said 12 people were on board at the time, and two suffered minor injuries and were treated at the scene. Shuttle buses were brought in to help move passengers and get people on the ground to their planes.
Shuttle buses were still being used Monday to transport passengers between MIA and the rental car center, and officials are advising passengers returning rental cars to add 30 minutes to their travel plans.
Some passengers voiced frustrations over the unexpected delays.
"It took me close to 40 minutes to get to the rental center, and when you come for today, only 40 minutes is a good part of your day," Adolfo Anez said. "It's frustrating because the Miami airport is supposed to be one of the busiest, they should keep up with the customer demand."
"I understand sometimes you're coming in and you don't know exactly what's going on," MIA spokesman Marc Henderson said. "You're in somewhat of a stressful state because you really want to make that flight...sometimes it happens."
It was the first such incident on the trains since they went into operation in September 2011, Chin said.
Each train consists of two cars, with one pulling the other. Chin said the rear car went off the tracks. Early Monday, workers used a crane to lift the car off the tracks and onto a truck to take it away for repairs.