As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - GREEN LIGHT OBSERVED FOR NOSE GEAR DOWN. ABOUT 30 SECONDS, LATER GREEN LIGHT CAME ON STAYED ON THROUGHOUT LANDING.. HELD NOSE OFF TO 95 KNOTS UNTIL LOSS OF ELEVATOR EFFECTIVENESS NOSE TOUCHED DOWN SMOOTHLY PINNED 3 GEARS AND TAXIED TO GATE. FOUND NLG OVERCENTER SENSOR TO BE DAMAGED. REPLACED OVERCENTER SENSOR AND ACCOMPLISHED NLG SWING. SYSTEM OPS CHECK OK. (M)