B767-200
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Returned To Departure Airport; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Landed in Emergency Condition; Flight Crew Overcame Equipment Problem; General Maintenance Action; General Flight Cancelled / Delayed
Procedure; Aircraft
All normal procedures and company checklists accomplished prior to takeoff clearance. Takeoff roll initiated at XA03z on Runway XXL ZZZ. Acceleration and aircraft systems normal through approximately 120 KIAS. At approximately 120 KIAS; EICAS message 'L Hyd Qty' displayed. Captain called the item and stated continue. Normal takeoff continued. Soon after rotation an ever increasing list of EICAS messages began to display. The highest order EICAS message was 'L HYD SYS PRESS' followed by numerous items 'RUDDER RATIO'; etc. A quick check of the status page indicated 0 fluid remaining. After takeoff checklist was accomplished. Approach Control was advised we needed to be vectored for a return and that we needed a few minutes to work through the issue. The Captain operated as pilot flying throughout using the autopilot; and took the left comm [radio] while I worked through the multiple non-normal QRH checklists in succession. While working on the completion of non-normal QRH checklists; the Captain notified ATC; and we received vectors for an ILS to RWY XY at ZZZ. Approach and landing checklists were completed; and the aircraft landed without event. Aircraft control on the ground was normal; and aircraft taxied to Gate XX under own power.
On takeoff roll around 120 KTS with V1 at 132 KTS EICAS message L Hyd Qty low". Announced 'continue' and elected to continue takeoff believing quantity just needed to be topped off. After liftoff around 400-800 feet master caution "L Hyd press" and associated cautions. Checking status page showed Left Hydraulic quantity 0.  Requested runway heading. Completed after takeoff checklist followed by non normal for the loss of Left Hydraulic quantity. Notified ATC and vector for return to ZZZ. Normal landing and taxi back to ramp.  After block in; Maintenance found hydraulic fluid covering left outboard wing. discovered left spoiler POV (Positive Overflow Venting) valve had failed resulting in total loss of left hydraulic quantity."
Flight Crew reported the total loss of left hand hydraulic system fluid quantity; resulting in an air turn back and a precautionary emergency landing.