As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- DURING TAXI, UPON TRANSFER OF HYDRAULIC FLUID FROM NR 2 SYSTEM TO NR 1 SYSTEM, LOST ALL FLUID FROM NR 1 NACELLE. REMOVED AND REPLACED BRAKE LINE AND RESERVICE BOTH HYDRAULIC SYSTEMS. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.