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Re: Douglas TBD range needed
"Empty weight" is sort of like "range". You need to know the definition of an "empty" aircraft before you can make a meaningful comparison. Depending at what point in the life of a US military airplane this weight is reported, it may (or may not) include:
crew
GFE (government furnished equipment, like radios, bomb racks and guns)
oil (engine and hydraulic)
unusable fuel
etc.
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