As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER RETRACTING LANDING GEAR, THERE WAS A LOUD VIBRATION. UPLATCH CHECK GOOD. VIBRATION AND NOISE INCREASED WITH AIRSPEED. FOUND RIGHT FWD NOSE GEAR DOOR DOWN (DID NOT RETRACT). NO DEFECTS FOUND. FORWARD GEAR UPLOCK AND LOCK NORMAL ON GROUND REF MM 32-20-0. (M)