B767 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 6421; Flight Crew Type 5238
Situational Awareness
Aircraft Equipment Problem Less Severe
Flight Crew Landed As Precaution; Flight Crew Landed in Emergency Condition
Aircraft
At the gate we were delayed as maintenance troubleshot a 'gushing' Hydraulic leak - their description. They found a nut loose; repaired and sent us on our way. The leak was in the left system; which had dropped to .85; so it was serviced before we departed.[In flight] the ANTISKID light and EICAS message illuminated. Status page showed NORM and ALT system had failed. We ran the QRH and tried to get hold of [dispatch]. SATCOM did not work on either radio; multiple frequencies. We sent an ACARS message; and [Dispatch] responded; was finally able to get through. By this time quantities had dropped from 1.0 to .93 (Left) and 1.01 to .94 (Right); hyd systems. Center Hyd system remained 1.06 steadily. We ran the ANTISKID QRH; did the landing distance performance calculations; and talked to [dispatch] about where we could put it down on a dry runway. ZZZ was still looking and forecasting dry runways which held up.We reviewed options if quantities continued to fall.Monitored the situation; watched quantifies drop to .92; but no further on L and R systems. [Advised ATC] and landed on the longest runway (13;000 ft) which allowed me to brake effectively with reverse and minimize use of brakes.QRH warned about potential for blowing tire; so we asked for equipment. After coming to a complete stop on runway; we were inspected and told nothing unusual. All indications were good in the cockpit so we taxied to gate and parked.
A B767 Captain reported that Maintenance repaired a hydraulic leak prior to departure; during cruise the hydraulic quantity started dropping.