Narrative:

Halfway to seattle, dispatch called to inform us the zero fuel weight we were given by operations was wrong. We had no reason to suspect an error when we were given the numbers because our takeoff weight was 200 pounds less than our dispatch weight. The zero fuel weight that we used was 111800 pounds, when it actually was 113700 pounds (a difference of 1900 pounds). We took off below maximum takeoff weight and landed under maximum landing weight. The takeoff from anc was normal and so was the climb and cruise. Descent and approach was flown with the corrected weight and was also normal.

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Original NASA ASRS Text

Title: B737-400 FLT CREW NOTIFIED ENRTE THAT THEY HAD DEPARTED WITH AN ERRONEOUS ZERO FUEL WT. CALCULATIONS WERE CORRECTED FOR DSCNT AND LNDG.

Narrative: HALFWAY TO SEATTLE, DISPATCH CALLED TO INFORM US THE ZERO FUEL WT WE WERE GIVEN BY OPS WAS WRONG. WE HAD NO REASON TO SUSPECT AN ERROR WHEN WE WERE GIVEN THE NUMBERS BECAUSE OUR TKOF WT WAS 200 LBS LESS THAN OUR DISPATCH WT. THE ZERO FUEL WT THAT WE USED WAS 111800 LBS, WHEN IT ACTUALLY WAS 113700 LBS (A DIFFERENCE OF 1900 LBS). WE TOOK OFF BELOW MAX TKOF WT AND LANDED UNDER MAX LNDG WT. THE TKOF FROM ANC WAS NORMAL AND SO WAS THE CLB AND CRUISE. DSCNT AND APCH WAS FLOWN WITH THE CORRECTED WT AND WAS ALSO NORMAL.

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.