As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT APPROXIMATELY 50 KNOTS ON RUNWAY 36, CREW RECEIVED A R REV UNSAFE CAUTION MESSAGE. CREW EXITED THE RUNWAY WITHOUT ISSUE AND RETURNED TO THE GATE. THE AIRCRAFT IS CURRENTLY IN WORK TO DEFER THE RH THRUST REVERSER.R/R K30 RELAY IN JB-5 IAW CRJ 900 AMM 24-03-09-000/400-801. OPS CHECK GOOD.