As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD 3 CAUTION MESSAGE CLIMBING THROUGH 10000 MSL. QUANTITY AT 15 PERCENT, PSI APPROX 2000. SYSTEM 3 PSI BEGAN FLUCTUATING 0-1600 PSI. GEAR EXTENDED TO DOWN AND LOCKED POSITION WITHOUT PROBLEM. (FLT 5237) REPLACED HYDRAULIC HOSE AT ACOUSTIC FILTER ON 3A HYDRAULIC SYSTEM. LEAK CHECK GOOD.