The US Air Force has officially reached an agreement with Boeing to build the first rapid prototype of the E-7 battle management aircraft, a significant step toward modernizing America’s airborne warfare capabilities.

The announcement was made by Air Force Secretary Frank Kendall at the prestigious Royal International Air Tattoo air show over the weekend.

Evolving Technology in Air Surveillance

The E-7, a twin-engine Airborne Early Warning and Control System (AEW&C) aircraft has been selected to replace the aging fleet of the E-3 Sentry AEW&C, which has been in service for decades.

Both aircraft provide a crucial eye in the sky to forces on the ground, but of course, they have obvious differences, particularly in their technology.

The E-3, a veteran workhorse based on a Boeing 707, utilizes a large, rotating radar dome for 360-degree coverage. While powerful, this design adds weight and maintenance complexity. In contrast, the E-7, based on a modern Boeing 737 Next Generation aircraft, employs a fixed electronically scanned array radar. This offers similar coverage but is lighter, more fuel-efficient, and boasts a “stare” capability, allowing for focused tracking of specific targets.

E-3 Sentry
E-3 Sentry (US Air Force)

The US Air Force has committed to acquiring 26 of these aircraft by 2032. As of February 2023, the initial deal was valued at $1.2 billion.

Negotiation Challenges and Solutions

The agreement concludes months of intense negotiations between the US Air Force and Boeing, which were primarily complicated by the service’s specific requirements for the aircraft.

These include enhanced satellite communications (SATCOM), military GPS capabilities, and heightened cybersecurity measures.