Boeing has won a $1.49-billion contract for building 13 additional P-8A maritime surveillance aircraft, and supply of parts for 20 other aircraft of the same type.
The Defence Department said yesterday that nine planes were under construction for the US Navy, while the remaining four were designed for the Royal Australian Air Force.
The parts would be used for the manufacture of 16 additional P-8A planes for the US Navy and four other Australian aircraft.
The Pentagon said the plane and parts with 80 per cent of the work being performed in the northwestern state of Washington, would be due for delivery by December 2018.
The contract also included funding for titanium and other parts required for the manufacture of 16 additional P-8A aircraft for the US Navy and four more Australian planes, according to the department.