As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER DEPARTURE HAD SLAT FAIL MESSAGE. WE RAN QRH CHECKLIST AND RETURNED TO YYC. FOUND RT SLAT DRIVELINE MECH DISCONNECTED AT RT NR 5 SLAT ACTUATOR. CARRIED OUT FIM 27-81-00-810-801-A AND RE-CONNECTED TORQUE TUBE AS PER AMM 27-81-03/401. SLAT CONTROL ELECTRICAL RIGGING CARRIED OUT AS PER AMM 27-80-00-820-802-A.