As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GEAR RETRACTION, NR 2 ENGINE HYDRAULIC PUMP CAUTION LIGHT ILLUMINATED. BOTH MAIN AND STANDBY PSI DROPPED TO 2000 PSI AND RUDDER FULL CAUTION LIGHT ILLUMINATED. AFTER THREE SECONDS, BOTH CAUTION LIGHTS EXTINGUISHED AND PRESSURE RETURNED TO NORMAL. ACFT JUST COMPLETED MAJOR HYDRAULIC SYSTEM COMPONENT R & R. SUSPECTED AIR IN HYDRAULIC SYSTEM. CHECKED BOTH SYSTEMS FOR EXCESS AIR IAW MM PROCEDURES 29-10-00. NO EXCESSIVE AIR NOTED AT THIS TIME.