3-line MRT disruption: Inherent manufacturing defect or installation mishandling likely caused power cables to fail Toggle share menu Advertisement 3-line MRT disruption: Inherent manufacturing defect or installation mishandling likely caused power cables to fail Crowds at Buona Vista MRT station after a power fault disrupted train services on several lines on Oct 14, 2020. (Photo: Christy Yip) 18 Mar 2021 09:26AM) Share this content Bookmark SINGAPORE: An inherent manufacturing defect or mishandling during installation had likely caused power cables to fail, resulting in last October's three-line MRT disruption that affected more than 120,000 commuters. Transport Minister Ong Ye Kung on Wednesday (Mar 17) announced the Land Transport Authority's findings into the Oct 14 disruption that halted train services on the North-South Line between Woodlands and Jurong East stations, the East-West Line between Queenstown and Gul Circle stations and the Circle Line between Serangoon and Harbourfront stations.