As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, LANDING GEAR FAILED TO RETRACT. GEAR REMAINED DOWN AND LOCKED. AFTER LANDING IT WAS DETERMINED A WIRE ON THE LANDING GEAR EMERGENCY SAFETY SWITCH HAD BEEN BROKEN OFF DURING INSPECTION AND LUBE OF NOSE GEAR CHAIN. JACKING THE AIRCRAFT AND DOING A RETRACT CHECK AFTER LUBING THE CHAIN OR ANY TYPE OF GEAR WORK WOULD PREVENT THIS.