According to a report from Reuters, Boeing (NYSE: BA) has gotten approval from the Pentagon for the sale of up to nine P-8A Poseidon aircraft to Britain. While Congress could still block the deal, the close relations between the two countries make any legislative roadblocks unlikely.

Should the sale go through, it would check off the priority for the surveillance and anti-submarine warfare capabilities the U.K.’s increased defense budget sought in procuring the P-8A.

The aircraft is based off Boeing’s 737-800 passenger jet, a plane which Wichita-based Spirit AeroSystems Inc. (NYSE: SPR), with the help of its local supply base, builds about 70 percent of for Boeing.