As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE LANDING GEAR WOULD NOT RETRACT. RETURNED TO CLT. INSPECTED NOSE LANDING GEAR AND DOORS, NO DAMAGE OR FOREIGN OBJECTS FOUND. NOSE GEAR OLEO FLAT ON ARRIVAL. SERVICED STRUT PER OPN 4703, SWUNG NOSE LANDING GEAR PER MM 07-11-00-2. GEAR RETRACTION AND INDICATION NORMAL.