As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- HOLDING SHORT OF RUMWAY, STARTED LOOSING NO.2 HYDRAULIC QUANTITY. NO.2 ENGINE HYDRUALIC PRESSURE LIGHT CAME ON. SHUT DOWN ENGINES AND WAS TOWED BACK TO THE GATE. REMOVED AND REPLACED FLEX LINE BETWEEN NO.3 MAIN LANDING GEAR BRAKE FITTING AND MAIN LANDING GEAR HARD LINE SUPPLY. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.