As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFTER TAKE OFF LANDING GEAR WOULD NOT RETRACT, LGCIU FAULT 1 & 2 WITH GEAR DOWN. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW WHERE IT LANDED SAFELY WITH OUT FURTHER INCIDENT. ** SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)