What was found
STL - FLT 7504 - BOTH HYDRAULIC PRESSURE GAUGES DROPPED TO ZERO. MAINTENANCE REPLACED LEFT HYDRAULUIC PUMP PRESSURE LINE. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STL - FLT 7504 - BOTH HYDRAULIC PRESSURE GAUGES DROPPED TO ZERO. MAINTENANCE REPLACED LEFT HYDRAULUIC PUMP PRESSURE LINE. (X)