As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MHT-PIT - FLT 1770 - DURING CLIMB-OUT, THE RIGHT HYDRAULIC PRESSURE DROPPED FOLLOWED BY THE LEFT HYDRAULIC PRESSURE. THE ALTERNATE GEAR EXTENSION WAS USED. THE AIRCRAFT LANDED WITHOUT INCIDENT AND WAS TOWED TO THE GATE. MAINTENANCE REPLACED THE RIGHT ENGINE DRIVEN HYDRAULIC PUMP. (M)