B767 Undifferentiated or Other Model
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Illness / Injury
Flight Crew Diverted; Flight Crew Landed As Precaution; General Physical Injury / Incapacitation
Aircraft; Human Factors
Flight was delayed approximately two hours for an engine change.  This was an ETOPS flight that required an in flight verification.  At top of climb; crew noticed that the left hydraulic system quantity was .71rf.  It appeared to be losing .01 every 2-3 minutes.  Crew contacted Dispatch and Maintenance Control.  Maintenance Control became aware that this was an ETOPS verification flight and agreed that the aircraft did not pass verification and would not be released ETOPS.  The quantity continued to slowly decrease albeit at a decreased rate.  The lowest reading in the left system was .56rf. Coordination between Maintenance and Dispatch resulted in a decision to land at ZZZ because it was the optimum station to take care of crew; passengers; and airplane.   After coordinating with ATC; diversion to ZZZ was commenced.  The flight crew then became aware of a flight attendant injured by a cart and a flight attendant who had a history of DVT and was complaining of possible blood clots.  As a precaution paramedics were advised to meet the flight in ZZZ for the two flight attendants.  During divert the Diversion guide was consulted and since we would be landing overweight we dumped remaining 6000 lbs from the center wing.  All checklists were accomplished and aircraft was recovered into ZZZ with normal approach and landing.  Aircraft landed approximately 2500 lbs over structural landing weight.
B767 First Officer reports being delayed for an engine change and once enroute the left hydraulic system is found to be losing fluid and not suitable for an ETOPS flight. A diversion is planned for the hydraulic issues and due to one Flight Attendant being injured by meal cart and another with blood clots.