Correct answer is... 29937 kg. It is equal to 66000 lbs. Empty weight of Boeing XP3B 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 12697 kg (27992 lbs).
The biggest civil aircraft has empty weight of 250,000 kg (628,000 lb), so Boeing XP3B has 12% percent of it's weight. Typical jet airliner has about 39,500 kg (87,100 lb), so in the comparision Boeing XP3B has 76% of aircrafts like B737 or A320.
Disclaimer: Our articles and data connected to empty weight of Boeing XP3B 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 XP3B.