As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GSP/DAY - FLT 2300 - DURING CLIMB, GEAR WOULD NOT RETRACT. AIR RETURNED TO CMH GATE AND RETURNED TO MAINTENANCE. UPON INSPECTION, MAINTENANCE ADJUSTED SQUAT SWITCH. PERFORMED SEVERAL GEAR SWINGS ON GROUND. AIRCRAFT RELEASED FOR FLIGHT.