Narrative:

The flight was dispatched normally; with 1 automatic function of the pressurization controller deferred inoperative. Engine start; taxi; and takeoff were normal; but at approximately 800 ft AGL; I noticed an EICAS right pack off message. I looked up at the overhead panel; and saw that the right bleed off light was illuminated; as well as the right pack off. I directed the coplts to wait until we reached a safe altitude before commencing checklists; so we continued a normal climb out. During the climb; it was necessary to use engine anti-ice; and we found that the right pack off light was extinguished when we used the engine anti-ice. Climbing through FL180; we began to run the bleed off irregular checklist. The checklist was accomplished; and the result was the same; the bleed off light illuminated. Contacted dispatch; and phone-patched to maintenance. Under the direction of maintenance we tried a bit of troubleshooting (circuit breakers; opening engine anti-ice valves); but we were unable to resolve the problem. Further; the right pack off light remained illuminated whether we used engine anti-ice or not. The route to ZZZ1 includes very high terrain; and some complex depressurization procedures. The dispatcher and I were in agreement that the safest course of action was to return to ZZZ. We dumped approximately 44000 pounds of fuel from the center tank; I spoke with the purser of the situation; and issued a cabin advisory. I made an announcement to the passenger; and we returned to ZZZ. Landing and rollout were normal; although we were overweight; at approximately 345000 pounds. After parking; I directed the relief pilot to enter the malfunctions and overweight landing into ACARS; and went to operations to call the crew desk.

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Original NASA ASRS Text

Title: A B767-300'S RIGHT ENGINE BLEED VALVE TRIPPED AND WOULD NOT RESET. BECAUSE ENROUTE REQUIREMENTS MANDATED DUAL BLEEDS; THE FLIGHT RETURNED TO LAND FOR MAINTENANCE.

Narrative: THE FLT WAS DISPATCHED NORMALLY; WITH 1 AUTO FUNCTION OF THE PRESSURIZATION CTLR DEFERRED INOP. ENG START; TAXI; AND TKOF WERE NORMAL; BUT AT APPROX 800 FT AGL; I NOTICED AN EICAS R PACK OFF MESSAGE. I LOOKED UP AT THE OVERHEAD PANEL; AND SAW THAT THE R BLEED OFF LIGHT WAS ILLUMINATED; AS WELL AS THE R PACK OFF. I DIRECTED THE COPLTS TO WAIT UNTIL WE REACHED A SAFE ALT BEFORE COMMENCING CHKLISTS; SO WE CONTINUED A NORMAL CLBOUT. DURING THE CLB; IT WAS NECESSARY TO USE ENG ANTI-ICE; AND WE FOUND THAT THE R PACK OFF LIGHT WAS EXTINGUISHED WHEN WE USED THE ENG ANTI-ICE. CLBING THROUGH FL180; WE BEGAN TO RUN THE BLEED OFF IRREGULAR CHKLIST. THE CHKLIST WAS ACCOMPLISHED; AND THE RESULT WAS THE SAME; THE BLEED OFF LIGHT ILLUMINATED. CONTACTED DISPATCH; AND PHONE-PATCHED TO MAINT. UNDER THE DIRECTION OF MAINT WE TRIED A BIT OF TROUBLESHOOTING (CIRCUIT BREAKERS; OPENING ENG ANTI-ICE VALVES); BUT WE WERE UNABLE TO RESOLVE THE PROB. FURTHER; THE R PACK OFF LIGHT REMAINED ILLUMINATED WHETHER WE USED ENG ANTI-ICE OR NOT. THE RTE TO ZZZ1 INCLUDES VERY HIGH TERRAIN; AND SOME COMPLEX DEPRESSURIZATION PROCS. THE DISPATCHER AND I WERE IN AGREEMENT THAT THE SAFEST COURSE OF ACTION WAS TO RETURN TO ZZZ. WE DUMPED APPROX 44000 LBS OF FUEL FROM THE CTR TANK; I SPOKE WITH THE PURSER OF THE SIT; AND ISSUED A CABIN ADVISORY. I MADE AN ANNOUNCEMENT TO THE PAX; AND WE RETURNED TO ZZZ. LNDG AND ROLLOUT WERE NORMAL; ALTHOUGH WE WERE OVERWT; AT APPROX 345000 LBS. AFTER PARKING; I DIRECTED THE RELIEF PLT TO ENTER THE MALFUNCTIONS AND OVERWT LNDG INTO ACARS; AND WENT TO OPS TO CALL THE CREW DESK.

Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.