Narrative:

On cockpit setup, the #2 main tank aft boost pump light remained illuminated with the switch on. Maintenance found the boost pump to be inoperative and complied with company MEL procedures for releasing the aircraft with the pump inoperative. As they finished the necessary logbook entries our departure time of XX20 arrived and we pushed back on time, with what we thought was adequate fuel for the MEL'ed pump of 4800 pounds and 11000 pounds fuel required for the flight (burn and reserve). Our fuel on board was 18800 pounds. After takeoff, I realized I had not coordinated with our dispatchers for an amended release. I resolved to call them at our destination elp. Upon arrival I discussed with our dispatch the fact that I needed an amended release. It was at this time that they informed me that I had departed with less than the required fuel load of 19500 pounds. This figure was arrived at by adding 11000 pounds burn and reserve plus the 4800 pounds required in the #2 main tank and a minimum of 3800 pounds in the #1 main, for a total of 19600 pounds. We only had 18800 pounds at pushback. As a consequence we arrived in elp with 11600 pounds and were required to have 12200 pounds (the 8600 pounds in the mains and 3600 pounds reserve). We had burned 1000 pounds of our reserve fuel.

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Original NASA ASRS Text

Title: FLC OF AN MLG DEPARTED WITHOUT REQUIRED FUEL LOAD CAUSED BY AN MEL PROVISION WHEN DEFERRING A #2 AFT MAIN FUEL BOOST PUMP.

Narrative: ON COCKPIT SETUP, THE #2 MAIN TANK AFT BOOST PUMP LIGHT REMAINED ILLUMINATED WITH THE SWITCH ON. MAINT FOUND THE BOOST PUMP TO BE INOP AND COMPLIED WITH COMPANY MEL PROCS FOR RELEASING THE ACFT WITH THE PUMP INOP. AS THEY FINISHED THE NECESSARY LOGBOOK ENTRIES OUR DEP TIME OF XX20 ARRIVED AND WE PUSHED BACK ON TIME, WITH WHAT WE THOUGHT WAS ADEQUATE FUEL FOR THE MEL'ED PUMP OF 4800 LBS AND 11000 LBS FUEL REQUIRED FOR THE FLT (BURN AND RESERVE). OUR FUEL ON BOARD WAS 18800 LBS. AFTER TKOF, I REALIZED I HAD NOT COORDINATED WITH OUR DISPATCHERS FOR AN AMENDED RELEASE. I RESOLVED TO CALL THEM AT OUR DEST ELP. UPON ARR I DISCUSSED WITH OUR DISPATCH THE FACT THAT I NEEDED AN AMENDED RELEASE. IT WAS AT THIS TIME THAT THEY INFORMED ME THAT I HAD DEPARTED WITH LESS THAN THE REQUIRED FUEL LOAD OF 19500 LBS. THIS FIGURE WAS ARRIVED AT BY ADDING 11000 LBS BURN AND RESERVE PLUS THE 4800 LBS REQUIRED IN THE #2 MAIN TANK AND A MINIMUM OF 3800 LBS IN THE #1 MAIN, FOR A TOTAL OF 19600 LBS. WE ONLY HAD 18800 LBS AT PUSHBACK. AS A CONSEQUENCE WE ARRIVED IN ELP WITH 11600 LBS AND WERE REQUIRED TO HAVE 12200 LBS (THE 8600 LBS IN THE MAINS AND 3600 LBS RESERVE). WE HAD BURNED 1000 LBS OF OUR RESERVE FUEL.

Data retrieved from NASA's ASRS site as of July 2007 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.