As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT RT HYDRAULIC QUANTITY INDICATION WENT TO ZERO. AIRCRAFT RETURNED TO GATE WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT SYSTEM USING AIRCRAFT MAINTENANCE MANUALS. MAINTENANCE REMOVED AND REPLACED THE RT HYDRAULIC PUMP. SYSTEM WAS SERVICED AND CHECKED PER THE AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT WAS RETURNED TO SERVICE.