Escape Path
We were operating an MD-11F ACMI. The cargo agent (working for our customer) was suspect of and I believe convicted for altering the pallet weights. There is no way of knowing the true weight of this type of aircraft, all is based on calculation. We (testiment to the airframe) had a normal T/O / climb, it took us about 4-5 hours to see that we did not have the fuel to meet destination.