As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BWI - INFLIGHT T1576/18 NOSE LANDING GEAR RED LIGHT ILLUMINATED AFTER TAKEOFF. CREW DID NOT EXPERIENCE EXCESS DRAG. CONTINUED TO BWI. ON APPROACH RECEIVED GEAR UNSAFE LIGHT WARNING. LOWERED GEAR MANUALLY AND DID A FLYBY TO CONFIRM GEAR DOWN. LANDED WITHOUT INCIDENT. ADJUSTED NOSE GEAR OVER CENTER LOCK SENSOR IN ACCORDANCE WITH AMM 32 60 05 2. SYSTEM GROUND CHECKED NORMAL OPERATION.