Train was introduced in 1986 as 937/938 ADI-COCHIN HT SF EXP. Originally running via ST-JL-DD-MMR-SBC-JTJ it was renumbered to 2637/2638 SF EXP from 1989 and was re-routed via BSR-KJM-TPT.
Interesting fact was that it used to share rakes of then 941/942 (2641/2642 and 6045/6046) MAS-ADI Navjivan EXP.
The 942 Navjivan EXP which used to arrive ADI in Tuesday evening became 937 ADI-COCHIN Exp of WED morning, to arrive CHTS on FRI at 8AM. Same rake used to leave CHTS on FRI at 18:30 and arrive ADI on SUN afternoon, to return MAS next...
more... day as 941 Navjivan Exp.
Coach composition: 1-2AC, 12-SL, 1-PC, 3-GN
LOCO (1986-89): WDM2 ED ADI-CHTS, loco reversal at JL, SBC & JTJ
LOCO (1989-99):
WCAM1: ADI-BSR
WCM1/WCG1: BSR-PUNE
WDM2 ED: PUNE-CHTS
Diverted to Konkan Railway from 1999.