As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROC FLIGHT 2160 THE CREW REPORTED THE LANDING GEAR WOULD NOT RETRACT ON CLIMBOUT. THE AIRCRAFT RETURNED TO ROC AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE LANDING GEAR ELECTRONIC UNIT.OPERATIONAL CHECKS WERE GOOD.