As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER DEPARTURE, THE AIRCRAFT EXPERIENCED A 'B' SYS FAILURE AND RETURNED TO BLOCKS. DURING FLAP AND GEAR SELECTION, THE AIRCRAFT ENTERED AN UNCOMMANDED RIGHT ROLL WHICH THE CREW WAS ABLE TO COMPENSATE FOR. THE OUTBOARD FLIGHT SPOILER WAS PARTIALLY DEPLOYED AND THE ACTUATOR HAD A CRACKED HOUSING. REPLACED.