Narrative:

We went below our minimum in-flight weight by 4000 pounds at landing. In-flight minimum weight is not a required memory item per our fom. We showed up late at the aircraft by 1/2 hour due to our driver getting lost. We were then told if we did not push back in 1/2 hour that we would take a delay because the ground crew was going to work another aircraft first. Our preflight paperwork and flight plan showed that we would have an 8000 pound load on board. This was enough to keep us above our minimum in-flight weight. In our rush to push back, we received our weight and balance. Everything on the weight and balance checked out fine. What we didn't notice is that no load had been put on the aircraft. The weight and balance said we had no load. During cruise, after reviewing our paperwork, we realized we were going to go below our minimum flight weight. We continued to our destination and landed uneventfully about 4000 pounds below our minimum in-flight weight.

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Original NASA ASRS Text

Title: A FO'S RPT ON ACFT BEING BELOW AN INFLT MINIMUM WT IN AN A300-600 CARGO FLT AT DEP FROM ZZZ, US.

Narrative: WE WENT BELOW OUR MINIMUM INFLT WT BY 4000 LBS AT LNDG. INFLT MINIMUM WT IS NOT A REQUIRED MEMORY ITEM PER OUR FOM. WE SHOWED UP LATE AT THE ACFT BY 1/2 HR DUE TO OUR DRIVER GETTING LOST. WE WERE THEN TOLD IF WE DID NOT PUSH BACK IN 1/2 HR THAT WE WOULD TAKE A DELAY BECAUSE THE GND CREW WAS GOING TO WORK ANOTHER ACFT FIRST. OUR PREFLT PAPERWORK AND FLT PLAN SHOWED THAT WE WOULD HAVE AN 8000 LB LOAD ON BOARD. THIS WAS ENOUGH TO KEEP US ABOVE OUR MINIMUM INFLT WT. IN OUR RUSH TO PUSH BACK, WE RECEIVED OUR WT AND BAL. EVERYTHING ON THE WT AND BAL CHKED OUT FINE. WHAT WE DIDN'T NOTICE IS THAT NO LOAD HAD BEEN PUT ON THE ACFT. THE WT AND BAL SAID WE HAD NO LOAD. DURING CRUISE, AFTER REVIEWING OUR PAPERWORK, WE REALIZED WE WERE GOING TO GO BELOW OUR MINIMUM FLT WT. WE CONTINUED TO OUR DEST AND LANDED UNEVENTFULLY ABOUT 4000 LBS BELOW OUR MINIMUM INFLT WT.

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.