As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. RECYCLED 3 TIMES, NO CHANGE. RETURNED AND AIRCRAFT LANDED WITHOUT INCIDENT. FOUND LANDING GEAR CONTROL BOX DEFECTIVE. REMOVED AND REPLACED IAW MM CH 32-33. RETRACTION AND EMERGENCY EXTENSION OPS CHECKED GOOD.