The US Air Force has awarded Boeing a potentially $11.9 billion contract to support weapon system modernisation of its B-52 bomber fleet.

"This contract will include several delivery orders over an eight-year period. This is a contracting vehicle that will allow engineering sustaining contracts, studies, production and other activities to occur in support of the B-52," says Boeing.

The company expects to receive its first funds in relation to the indefinite delivery/indefinite quantity deal on 30 September, it says.

 B-52 - USAF
© Staff Sgt Kamaile Long/US Air Force
The USAF has an active fleet of 77 B-52Hs

"Boeing has been maintaining and modernising the B-52 bomber for 55 years - including engineering services and upgrades to communication technology - allowing the B-52 to remain a relevant weapon system in support of military missions around the world," the company says.

 B-52 crew - USAF
© Staff Sgt Christopher Boitz/US Air Force

The USAF has 77 H-model B-52s in service, as listed in Flightglobal's MiliCAS database. These were delivered in 1961-2, it says.

Source: Flight International