As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING TAXI OUT, R1 SLIDE INDICATION FLASHING ON FLIGHT DECK DISPLAY AND AT FLIGHT ATTENDANT CONTROL PANEL. MAINTENANCE ADJUSTED DETECTOR PROXIMITY SENSOR 4WN2 PER AMM 52-71-00 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK WITH NO FAULTS NOTED.