As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW GOT A GEAR DISAGREE GOING INTO SDF AND DID THE ALTERNATE EXTENSION (FLT 5455 FILED CLOSED)AFTER REPAIRS TO 3A AND 3B HYDRAULIC SYSTEM (PLEASE SEE EAML 1163259 FOR REPAIR TO HYDRAULIC SYSTEM), JACKED AND PERFORMED A LANDING GEAR EXTENSION AND RETRACTION IN REFERENCE TO CRJ AMM 32-30-00 OPS CHECKS GOOD