As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LANDING GEAR WOULDN'T RETRACT AFTER TAKEOFF FROM PHL, CREW DIDN'T DECLARE EMERGENCY BUT RTF AT PHL AND LANDED WITHOUT INCIDENT AND HAD EMERGENCY VEHICLES ON STANDBY. MAINTENANCE WAS DISPATCHED TO THE A/C TO TROUBLESHOOT. MAINTENANCE FOLLOWED EMB AMM FOR FAULT CODE 32612306PSS, AND SUCCESSFULLY COMPLETED GEAR SWINGS AND OPS CHECKS. THE A/C WAS THEN RETURNED TO SERVICE.