As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O LG GEAR AIR GND FAIL MSG ON EICAS, CREW WAS NOT RETRACTING GEAR. RETURN TO FIELD AND EMERGENCY DECLARED FACT 06OCT24 13:02 ROA FOUND LG RT WOW PROX SWITCH MESSAGE ON CMC. T/S IAW FIM 32-63-00-810-803-A. R/R'D BOTH R/H MLG PROX SWITCHES