As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THE NOSE GEAR WOULD NOT RETRACT. NOSE LIGHT REMAINED ILLUMINATED. INSPECTED NOSE GEAR ASSY AND FOUND LOWER TORQUE LINK MOUNTING BOLT LOOSE. RETORQUED TORQUE LINK BOLT. LANDING GEAR OPS CHECKED GOOD. ALL WORK DONE IAW MM 32-20-00 & 32-00-01.