As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4662 CREW REPORTED THAT GEAR FAILED TO RETRACT DURING TAKE OFF. AIRCRAFT RETURNED TO FIELD. ACFT REMOVED FROM SERVICE. REMOVED AND REPLACED UNLOCK BOX IAW EMB AMM B32-33-10. PERFORMED EXTENSION AND RETRACTION IAW AMM 32-30-00, OPERATIONAL CHECK GOOD NO FURTHER DEFECTS NOTED. ACFT RETURNED TO SERVICE.