As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, AT APPROX 85 KNOTS, MAIN CARGO DOOR WARNING ILLUMINATED. NO HIGH ENERGY BRAKING WAS REQUIRED DURING REJECTED TAKEOFF. VERIFIED "VENT DOOR" ON PANEL WAS ILLUMINATED, VENT DOOR NOT FULLY STOWED. CYCLED MAIN CARGO DOOR IAW PRECISION CONVERTED FREIGHTERS AMM 52-30-00/513. OPS CHECKS GOOD.