MD-11
Flight Crew Last 90 Days 90; Flight Crew Total 8000; Flight Crew Type 3000
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Fuel Issue
Flight Crew Became Reoriented; Flight Crew Overcame Equipment Problem
Aircraft; Human Factors
En route we received a level 2 'FUEL QTY FAULT' message.  It was identified as situation 2 due to tank 2 being 'X'ed on the System Display (SD). We ran the checklist which had us put the fuel system into manual. During the flight; we received a level 2 'FUEL OFF SCHEDULE' message.  The Captain was rescheduling the fuel from the upper aux tank into tanks 1; 2; and 3 manually with the fill valves.  While doing this; he accidentally pushed the fuel pump switch; turning off the boost pump to engine number 2.  He couldn't see this due to the positioning of his right hand pushing the fill valves. I looked up and noticed the fuel pump was off.  At that point I queried the Captain asking if he meant to turn it off.  He replied he didn't and either he or I turned it back on. I then looked at the engine 2 gauges and noticed they were rolling back. I mentioned it to the captain and he initially pushed the eng ignition ovrd switch and the engine relit. This was followed by a level 2 EICAS message 'SELECT FADEC ALTN'. We pulled out the QRH and ran the appropriate checklist. The aircraft returned to a normal state and we continued the flight without further interruption.
A MD-11 First Officer reported the number 2 engine rolled back in cruise flight when the fuel pumps for that engine were inadvertently turned off while troubleshooting a fuel system issue.