As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 7904 - LIT - LANDING GEAR WOULD NOT RETRACT. CONTROL LEVER WOULD NOT MOVE. MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR ELECTRONIC UNIT (LGEU) AND PERFORMED AN OPERATIONAL CHECK OF THE LANDING GEAR EXTENSION AND RETRACTION SYSTEM.