As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKEOFF THE LANDING GEAR WOULD NOT RETRACT, THE FLIGHT RETURNED AND LANDED APPROXIMATELY 5800KG OVERWEIGHT. CREW DECLARED PAN PAN WITH ATC. CARRIED OUT TSM 32-31-00-810-868-A STEPS 4A 1-7. FOUND FLUID OVERSERVICED. OLEO SERVICED WITH FLUID IAW AMM 12-12-32-611. NLG RETRACTION AND EXTENSION ACCOMPLISHED IAW AMM 32-30-00-867. CHECKS SERVICEABLE.