As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE CREW OBSERVED INDICATION OF RIGHT HYDRAULIC SYSTEM FLUID QUANTITY LOSS. EMERGENCY DECLARED. LANDING UNEVENTFUL. AIRCRAFT GROUNDED. MAINTENANCE FOUND THE PRESSURE SWITCH PACKING ON THE FILTER MODULE IN THE RIGHT PYLON LEAKING. REMOVED AND REPLACED THE PACKING AND ACCOMPLISHED LEAK CHECK. SYSTEM CHECKS NORMAL.