As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRCRAFT DEPARTED AND RED NOSE GEAR LIGHT ON WITH GEAR HANDLE UP. AIRCRAFT LANDED BACK. NLG UP LOCK PROXIMITY SENSOR P/N 8-337-03 REPLACED ALSO RELAY R2-262 REPLACED AS PRECAUTIONARY. AIRCRAFT DISPATCHED SERVICEABLE. SAME DEFECT REOCCURS AT DEPARTURE. AIRCRAFT LANDED BACK. NOSEGEAR OLEO FOUND FLAT. OLEO HAS BEEN SERVICED AND SYSTEM CHECKED SERVICEABLE.