As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR CANNOT BE RAISED AFTER TAKEOFF. AIRCRAFT RETURNED TO AIRPORT. LANDING NORMAL. DURING TROUBLESHOOTING FOUND LANDING GEAR NORMAL CONTROL SWITCH READS NO CONTINUITY BETWEEN PINS H AND K. REMOVED AND REPLACED LANDING GEAR SELECTOR UNIT. OPS CHECK GOOD I/A/W 32-31-11. AIRCRAFT RETURNED TO SERVICE.