New Orange Line trains have been pulled from service because of an “uncommon noise,” the T said Tuesday, the latest setback for the embattled new models of cars introduced in August.
“Vehicle engineers continue to closely monitor the trains’ performance during each of the new cars’ trips and recently observed an uncommon noise from the underside of the cars,” T spokeswoman Lisa Battiston said in a statement. “With safety as a top priority and out of an abundance of caution, the decision was made to temporarily remove the new cars from service to investigate the issue, any potential impacts, and deploy a fix, if needed.”
No date has been set for the train cars’ return to service as the investigation into the issue continues, Battison said.
Last month, one of the T’s new 152 Orange Line trains derailed in a train yard mishap, popping off the rails when crossing over a track switch.
The T said no passengers were aboard, the train was not in service and no significant damage was reported.
In September, two trains were taken out of service when sets of doors opened while the train was in motion near the Massachusetts Avenue stop, prompting an automatic stop.
The Orange Line has also experienced issues related to the Tufts station, when a rush hour commute was delayed by unfinished construction in October and a power issue temporarily knocked out service between Haymarket and Tufts stations during Tuesday’s snow storm.
