As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH WHEN LDG GEAR SELECTED DOWN. NOSE GEAR RED UNSAFE INDICATION ON FWD PNL. EXTENDED NOSE GEAR MANUALLY PER POM WITH NO CHANGE ON FWD PNL. THEN NOTICED GEAR GREEN INDICATION ON OVERHEAD PNL. NOSE GEAR VISUALLY INSPECTED DOWN AFTER TOUCH DOWN NOSE GEAR INDICATED GREEN. FOUND PROX SW S 846 PRIMARY NOSE DOWNLOCK SENSOR LOOSE AND GAP OUT OF LIMITS. ADJ AND SECURED NOSE DOWNLOCK SENSOR PER M/M.