As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, LANDING GEAR HANDLE WOULD NOT RETRACT. A SYS PRESSURE GOOD. CHECKLIST COMPLIED WITH. FOUND NLG STRUT NOT FULLY EXTENDED WHEN ACFT JACKED. PERFORMED NLG STRUT SERVICING IAW MM 12-10-38. PERFORMED LANDING GEAR EXTENSION AND RETRACTIONS CHECKED GOOD.