As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF LANDING GEAR DID NOT RETRACT PROPERLY. INDICATIONS WERE 3 RED GEAR LIGHT ANNUNCIATORS OVER ONE GREEN NOSE GEAR ANNUNCIATOR LIGHT. COMPLETED CHECKLIST AND LANDED NORMALLY WITH 3 GREEN LANDING GEAR LIGHTS; NO RED. REMOVED NLG CHANGE OVER SWITCH. INSTALLED A NEW NLG CHANGE OVER SWITCH. OPS CHECKED GOOD. ALL WORK DONE IAW MM 32-60-00-501.