About 25 feet of rail on the Plane Train people-mover track at Hartsfield-Jackson International Airport got damaged Sunday, disrupting service for passengers moving between the terminals and concourses.

The problem was caused when a metal plate on a switch near North baggage claim broke off, causing a train to damage the rail on the north side of the track by the domestic terminal, according to Hartsfield-Jackson spokeswoman Elise Durham. She said the airport and Plane Train contractor Bombardier are investigating the cause of the failure of the metal plate.

The Plane Train went out of service at 9:46 a.m. Sunday, according to Durham.

It started limited “shuttle” service at 10:18 a.m., with trains moving between some concourses but not reaching all the way to the domestic terminal.

When the Plane Train goes out of service, more passengers end up walking between the terminals and concourses to get to their flights or to baggage claim.

With the limited Plane Train service Sunday, “some passengers walked, some rode the train, and some walked and rode the train,” according to Durham.

The airport posted on Twitter at 3 p.m. Sunday that Plane Train service was restored.