As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYDRAULIC 3 LOW PRESSURE CAUTION MESSAGE DURING GEAR EXTENSION. CAME ON FOR 5 SECONDS AND WENT AWAY. 2900 PSI SHOWING 65 PERCENT 35C. GEAR SEEMED TO TAKE LONGER THAN NORMAL TO EXTEND AND RT MAIN WAS LAST TO LOCK DOWN. REMOVED AND REPLACED HYD PUMP 3B IAW AMM 29-12-03. OPS CHECKED GOOD. OK FOR SERVICE. OPS CHECKED GEAR SWING IAW AMM 32-30-00.