As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW ABANDONED THE TAKE-OFF AROUND 75KTS DUE TO AN AFT CARGO DOOR INDICATION ILLUMINATED. LIGHT FLICKERED DURING TAXI TO GATE, AND EXTINGUISHED AT GATE. DOOR WARNING SWITCH, ADJUSTMENT CHECKED AND FUNCTION CHECKED I.A.W MM 52-71-31. FOUND SWITCH UNSERVICEABLE.