3629 Train doors at Front DT car A4 door was not proven closed. SM(PNR)
push to close Front DT car A4 door for train to depart. No obstruction.

Reported as Level3 ~~~~~ IMDC- Depot found 3629 A4 door locking device faulty, causing loss of door status signal.
Replaced door locking device, doors cyclic check Satis.
Train released on 11/11/2021.