As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED AIR TO GROUND WARNING MESSAGE AND GEAR FAILED TO RETRACT, RETURNED TO IND. REMOVED AND REPLACED NOSE LANDING GEAR WEIGHT ON WHEEL SWITCH IAW EMB AM 32-63-02 AND RIGHT MAIN LANDING GEAR NUMBER 2 PROXIMITY SWITCH IAW EMB AMM 32-63-01. OPERATIONAL CHECK GOOD, AIRCRAFT RETURNED TO SERVICE.