As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT RETRACT. FOUND HYDRAULIC RESERVOIR EMPTY OF FLUID. FURTHER INVESTIGATION FOUND FLUID COMING OUT OF LEFT LANDING GEAR ACCESS PANEL. FOUND LEFT HYD ACTUATOR LEAKING AT RADIUS OF CAP FLATS WHERE THE CAP CAN BE PUT INTO A VISE AND TWISTED OFF. FOUND THIS SAME CONDITION IN A SERVICEABLE SPARE UNIT.