As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 4162 - CREW UNABLE TO RETRACT LANDING GEAR AFTER TAKEOFF. AIRCRAFT RETURNED TO FIELD WITHOUT FURTHER INCIDENT. AIRCRAFT FERRIED TO CAK WHERE MAINTENANCE PERSONNEL REPLACED THE LANDING GEAR RELAY BOX IAW EMB MM 32-31-02. OPS CHECKED LANDING GEAR IAW EMB MM 32-32-00, CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.