Definition of all-up weight
chiefly British
: the total weight of an aircraft, boat, or vehicle when it is fully loaded (as during takeoff)
- In this configuration the aircraft's all-up weight is just over a hundred tons.
- —Kenneth Munson, Bombers in Service . .. Since 1960, 1975
- … for a given all-up weight of glider, a gentle stall will always occur at the same indicated stalling speed.
- —Derek Piggott, Gliding, 1976
