Originally Posted by RJ85FO

36 months for initial hire equipment lock UNLESS you have opportunity to upgrade. There is no seat (status) lock for new hires, just the 1000 hours with company to upgrade.

If you lateral (when you are able) to another equipment, you are then seat (status) locked for 24 months.

I can assure you that there are no cases of "junior" F/O's upgrading on the CRJ.