As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: ENROUTE INDICATIONS OF A HYDRAULIC SYSTEM A FLUID LEAK, QUANTITY % WAS DROPPING 1% EVERY 8 MINUTES OR SO; AIRCRAFT DIVERTED TO AND LANDED SAFELY AT TUL. PERFORMED A THOROUGH DETAILED VISUAL INSPECTION OF ALL VISIBLE HYDRAULIC SYSTEMS AND FOUND NO LEAKS. PERFORMED HYDRAULIC SYSTEM BLEED PROCEDURE. FOUND NO VISIBLE LEAKAGE, NO FAULT FOUND. PER AMM 29-00-00-870-801.