As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SPEED "DO NOT ARM" LIGHT ILLUMINATED ON BEGINNING OF TAKEOFF ROLL. TAKEOFF ABANDONED, ACFT RETURNED TO GATE. ACFT IS CURRENTLY OPERATING UNDER MEL 27-7-1. FURTHER DETAILS OF THIS INCIDENT WILL BE PROVIDED AS THEY BECOME AVAILABLE.