As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT THE AVIONICS DOOR INDICATED OPEN ON TAKEOFF ROLL AND ABORTED THE TAKEOFF AT 80 KNOTS. MAINTENANCE REPLACED PROXIMITY SWITCH 40WV IAW AMM 52-71-15-400-001-A AND ACCOMPLISHED A SATISFACTORY OPS CHECK.