As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3398 - PHF-BWI - ON LANDING GEAR EXTENSION, NOSE GEAR UNSAFE LIGHT REMAINED ILLUMINATED. ALTERNATE GEAR DOWN AND LOCKED INDICATIONS WERE NORMAL. CONTINUED ON TO BWI AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED THE PROXIMITY SWITCH ELECTRONIC UNIT. (M)