As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON STARTUP FOR A FLIGHT, MECHANIC NOTICED LARGE PUDDLE OF HYD FLUID UNDER FUSELAGE. CLOSER INSPECTION REVEALED THE LT CYCLIC SERVO WAS LEAKING A LARGE AMOUNT OF HYDRAULIC FLUID. THE LEAK WAS SEVERE ENGOUGH THAT IT COULD HAVE RESULTED IN A LOSS OF HYD PRESSURE IN A VERY SHORT TIME. (K)