As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GROUND RUN HYD FLUID COMING FROM HOSE END FITTING GOING INTO HYD MAINFOLD. NEW HOSE WAS INSTALLED 1:43 HOURS AGO. REPORTED HAVING PROBLEMS WITH THIS HOSE. LOOKS LIKE POSSIBLE BAD CRIMPING OF HOSE ONTO FITTING. INSTALLED SERVICABLE HOSE OF AN OLDER PN. RUN UP NO LEAKS ON GROUND RUN.