Correct answer is... 33793 kg. It is equal to 74500 lbs. Empty weight of Boeing XB-39 Superfortress is total weight of the airframe, engine, avionics and all other systems installed by manufacturer. It is higher weight then empty speed of other aircrafts of a similar size. Average is about 14491 kg (31947 lbs).

The biggest civil aircraft has empty weight of 250,000 kg (628,000 lb), so Boeing XB-39 Superfortress has 14% percent of it's weight. Typical jet airliner has about 39,500 kg (87,100 lb), so in the comparision Boeing XB-39 Superfortress has 86% of aircrafts like B737 or A320.

**Disclaimer:** Our articles and data connected to empty weight of Boeing XB-39 Superfortress are based on public data from various sources.
We are very picky to select an reliable data providers, but we cannot guarantee that everything is 100% error-proof.
We recommend for any serious purpose - as a rule of thumb - to request offical data about empty weight from manufacturer of Boeing XB-39 Superfortress.

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