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
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“All-up weight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/all-up%20weight. Accessed 17 Aug. 2022.
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The first known use of all-up weight was in 1922
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