As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR LT ON TAKEOFF. REJECTED TAKEOFF AT 40 KTS DUE TO AFT CARGO DOOR INDICATION. PERFORMED OPERATIONAL CHECK OF AFT CARGO DOOR FOUND DOOR BUNGE CABLE COUGHT ON ONE OF THE DOOR STOPS OPS. OPEN AND CLOSE DOOR SEVERAL TIMES LIGHT EXTINGUISHED OPS CHECK NORMAL. AMM TASK 52-00-00-210-801.