As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED GEAR DISAGREE AND NOSE DOOR OPEN WARNING MESSAGES AFTER LANDING GEAR HANDLE SELECTED UP. MLG SHOWED UP AND LOCKED AND NLG SHOWED DOWN AND GREEN. MANUALLY LOWERED GEAR, LANDING SMOOTH AND UNEVENTFUL. ADJUSTED NOSE LANDING GEAR OLEO CENTERED/EXTENDED PROXIMITY SENSOR (PS12GA) IAW AMM 32-61-05, PERFORMED SEVERAL NOSE GEAR SWINGS, OPS CHECKED GOOD.