Date: 201910
Local time of day: 1801-2400
Location: ZZZ.ARTCC, US
Flight conditions: VMC
Light: Dusk
Aircraft: B767 Undifferentiated or Other Model
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Cruise
Airspace: Class A ZZZ
ATC / advisory: Center ZZZ
Aircraft component: Hydraulic System Pump
Component problem: Malfunctioning
Reporter organization: Air Carrier
Reporter function: Pilot Flying; Captain
Reporter qualification: Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Second reporter function: Pilot Not Flying; First Officer
Anomaly: Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Flight Crew
When detected: In-flight
Result: Flight Crew Diverted; Flight Crew Landed in Emergency Condition; General Maintenance Action
Contributing factors: Aircraft
Primary problem: Aircraft

Narrative: The aircraft dispatched with MEL 2911k (R HYD Demand pump inoperative in Auto; Operate in 'On' for all phases of flight). At cruise we had an intermittent Brake Source light; followed by an R Sys Hyd Press light; MC light; and EICAS MSG. We advised ATC we had a Hyd System problem and needed to consult with Company. I had the [Relief Pilot] return to the flight deck to assist. We completed the QRH 130.14 (R HYD System Press) we [Requested Priority Handling]. After Discussion with Dispatch; [Technical Support Maintenance Control]; [Company Communications System] we diverted back to ZZZ. We elected to burn fuel vs dump to get to a max landing weight 320 lbs.; I advised the Purser and cabin crew of our decision to return to ZZZ using 'TEST' SOP. I notified the passengers of our problem and our decision to return to ZZZ due to Safety. We completed all checklist and procedures and reviewed the approach and landing with the non-normal landing distance. Dispatch coordinated with Station Operations for aircraft recovery and sent a diversion flight plan. Normal approach and landing Runway XXL. We taxied to the end and turned off the runway to meet the [Aircraft Rescue and Firefighting] vehicles. After stopping we got hot brakes (on brakes 3; 4; 7; 8) due to the loss of sub-systems associated with the R HYD system i.e. Autobrakes; R TR and some Spoilers we completed the Hot Brakes checklist (at our weight and break application speed we were in the Caution Zone); we chocked the gear to let the brakes cool to prevent fuse plug melting and Brake Fire. We coordinated with [Aircraft Rescue and Firefighting]; Station Operations; Maintenance to send a Recovery Team to tow the aircraft to the gate. We elected to keep the passengers on the aircraft and recovered the aircraft to gate. After completing parking checklist I advised the passengers CS would coordinated Recovery and Continuation Plans and explained the problem and thanked them for their patience. After deplaning the passengers the entire crew did a Safety Debrief. I Debriefed [Aircraft Rescue and Firefighting]; Station Maintenance; Dispatch; [Chief Pilot]. Outstanding job by all! Thanks to Dispatch; flight crew; cabin crew; ATC; and ZZZ [Aircraft Rescue and Firefighting]!


Second narrative: We dispatched with an MEL. It required us to operate the R air demand pump in the on position for all phases of flight. We initially climbed to FL330; but due to ride conditions climbed to FL350. At FL350; we got the MC light; brake source light; and R Hydraulic pressure light. We advised ATC that we had a R hydraulic problem and would coordinate with company. We called the IRO back up into the cockpit. We completed the QRH (R Hyd System Press). We [advised ATC] and with coordination from Dispatch and Maintenance Control. We diverted back to ZZZ to burn fuel so we would not have to dump or make an overweight landing. We landed at 319.9 gross weight. We reviewed the non-normal landing chart and briefed the arrival and approach. We made a normal landing and taxied to the end and were meant by AARF vehicles. We did the hot brake checklist and chocked the plane to allow the brakes to cool. We were in the caution range and coordinated with Crash Fire Rescue; Airport Operations; and Maintenance to be towed to the gate. After deplaning; the Captain debriefed the flight crew. Outstanding leadership of the Captain and the rest of the crew; Dispatch; Operations; and Maintenance.


Synopsis: B767 flight crew reported total loss of R Hydraulic Demand pump causing the flight to divert.