As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYDRAULIC FLUID: AT CRUISE FL 360 WE RECEIVED A HYD #1 LO QUANITY CAS. WE PULLED UP OUR HYD PAGE AND SAW OUR FLUID QUANITY AT 12% AND IT DROPPED TO ZERO. THIS WAS FOLLOWED BY A HYD LOW PRESS CAS. WE COMPLETED BOTH CHECKLIST. POST FLIGHT REVEALED HYD FLUID ALL OVER LARGE SERVICE DOOR AND DRIPPING ON THE GROUND.