I don't know about 1900 operators closing down, maybe the smaller ones. In sa, one fairly large operator has stopped 1900 ops, purely an operational thing, gone atr and pc 12. Contracts are always looking for type rated drivers, one company in particular is doing 3-4 sim checks a week for 1900 drivers.try the bigger companys, the ones that have stood the test of time, solenta, nac etc etc etc. Only thing is with most of these companys, they want a frozen atp.
Good luck!