B777 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 180; Flight Crew Total 24000; Flight Crew Type 7300
Troubleshooting; Confusion
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Gate; General Maintenance Action
MEL; Aircraft
Upon departure and taxi out we got an ENG BLEED OFF light associated with the left engine MEL problem. Since there were 2 MELs for the same engine it was not readily apparent which problem this was associated with. We ran the appropriate supplemental procedure. During this time we were in contact with Maintenance Control and taking up taxi space; so we returned to the blocks since the source of the problem was not really known. Once in the blocks; we sorted the different MEL's out and departed once again. We recommended to Maintenance Control that the MEL placard needed to have more info for the crew and Maintenance Control said that they had tried to have it rewritten as this has happened before; but to no avail. On descent we started the APU per procedure and 10 min. later promptly lost the left pack for approx. 10 to 15 min. APU; Engine Bleed switching was no help. The pack came back on its own; but we don't know how. On taxi in to the gate we asked for Maintenance to meet the Captain to discuss the several issues with the aircraft but no one showed. This is the real world we work in.  The MELs don't cover all the bases and the crews get little to no support except for 'get the mission done' hard to do when the airplane doesn't work as advertised; even with supposedly legal deferrals on the MEL list.
B777 Captain experiences an ENG BLEED OFF light during taxi out; associated with two MEL's on the left engine. After consulting with Maintenance Control the flight departs. During descent for landing the APU is started as usual and ten minutes later the left pack is lost and fifteen minutes later the pack comes back on its own.