Converted from a Boeings 737-800 and modified by Boeing's Integrated Defense Systems division, the P-8A has a slightly larger airframe with raked wingtips and 6 integrated fuel tanks for extended range.
The P-8A is undergoing airframe validation testing to see if it can withstand extended load during its service life. Five test aricraft are being built, three flight-testers and two ground-testers, as part of the System Development and Demonstration contract. This new weapon system is expected to enter service in 2010.