Maintenance oversight left Kolkata Sairang Express brakes isolated before derailment
The Kolkata-Sairang Express derailed at Digaru railway station in Assam on November 11, 2026, after overshooting a red signal.
A preliminary probe says the main braking system was not working because it was in isolated condition, leading to the accident.
Investigators believe angle cock left closed
The crew first thought the brakes were fine when leaving Guwahati but noticed trouble after a stop at Panbari station for overheated wheels.
Investigators believe a key valve (the angle cock) was closed during maintenance and not reopened, a simple oversight that had big consequences.