Were all Conrail locomotive types equipped for use on the NEC, or was there only certain types, and if so which types (at least some Dash-7s were "NEC equipped", as that was the type involved in the Chase, MD accident, but there's got to have been others)?
Some SD-40-2's and some B-23-7's were equipped with LSL devices for NEC operation. Just exactly which ones I do not know
but maybe it is listed somewhere. Older timetables from the 90's might show some numbers of permitted engines but I am
not positive about that.
Noel Weaver