Page 30 of http://daveml.nasa.gov/AIAA_stds/SimParNames_May_2007_v2.pdf
contains errors regarding the unit of weight.
Since weight is a force (mass x gravitational acceleration), its SI
unit is the Newton [N], and not the kilogram [kg].
Therefore, it should be:
Symbol - Short Name - Full Variable Name
W - WEIGHT - grossWeight_lbf / grossWeight_N
For more info regarding mass, weight and their units, please read the
Wikipedia article regarding weight:
Wim Van Hoydonck