16883 R WDM3A from Golden Rock (GOC) moderates the descend into Bhagavathipuram (BJM) of 16102 Quilon (QLN) - Chennai Egmore (MS) Express following the climb up and down through the Thenmalai Ghat section on its way towards Sengottai (SCT). GOC WDG3A 13500 was the banker loco for the ascent.