As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) LANDING GEAR FAILED TO OPERATE DUE TO LOSS OF ALL HYDRAULIC FLUID BECAUSE OF A FAILED O-RING IN THE LEFT MAIN GEAR ACTUATOR. THIS RESULTED IN A GEAR UP LANDING WITH NOSE GEAR DOWN AND MAIN GEAR UP. MAJOR KEEL DAMAGE TO BOTTOM OF BOTH FLOATS. SUBMITTER SUGGESTS THAT WIPLINE SL #28 BE MANDATORY.