As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE THE "A" SYSYTEM HYDRAULIC LOW PRESSURE WARNING ILLUMINATED. EMERGENCY DECLARED. LANDING UNEVENTFUL. AIRCRAFT GROUNDED. MAINTENANCE FOUND THE "A" SYSTEM FLOW LIMITER TO BE LEAKING AT ITS O-RING. REMOVED AND REPLACED THE O-RING AND ACCOMPLISHED LEAK CHECK. SYSTEM CHECKED NORMAL.