Skip to content
You can now search across every topic, entity and event.What's new
E-3 Sentry
Technology

E-3 Sentry

US Air Force AWACS aircraft; one destroyed at Prince Sultan base on 27 March 2026.

Last refreshed: 3 April 2026

Key Question

What replaced the E-3 Sentry destroyed at Prince Sultan Air Base?

Timeline for E-3 Sentry

View full timeline →
Common Questions
What is the E-3 Sentry aircraft?
The E-3 Sentry is the US Air Force AWACS aircraft, providing over-the-horizon radar surveillance and airborne battle management since 1977.Source: lowdown
Was an E-3 AWACS destroyed in the Iran war?
Yes. An E-3 Sentry was destroyed by an Iranian Ballistic missile at Prince Sultan Air Base on 27 March 2026, the first combat loss of an AWACS in US history.Source: lowdown
What replaced the destroyed E-3 Sentry?
CENTCOM accelerated deployment of the EA-37B Compass Call, a pre-IOC electronic warfare aircraft, to partially fill the battle management gap.Source: lowdown

Background

The Boeing E-3 Sentry is the US Air Force's primary Airborne Warning and Control System (AWACS) aircraft, providing over-the-horizon radar surveillance, battle management, and command and control for joint air operations. Powered by four turbofan engines and carrying a distinctive rotating radar dome, a single E-3 can track hundreds of aircraft simultaneously across a radius exceeding 300 miles. On 27 March 2026, an Iranian Ballistic missile strike on Prince Sultan Air Base in Saudi Arabia destroyed one E-3 Sentry, the first combat loss of an AWACS aircraft in US history.

The destruction of the Prince Sultan E-3 created an immediate battle management gap over the theatre, forcing CENTCOM to accelerate the deployment of the EA-37B Compass Call electronic warfare aircraft as a partial substitute. The EA-37B had not yet reached Initial Operational Capability at the time of deployment. Two aircraft (AXIS41, AXIS43) departed RAF Mildenhall on 2 April, underscoring the urgency.

The E-3 fleet is ageing: the aircraft entered service in 1977 and the Air Force has been transitioning to the Boeing E-7A Wedgetail as its replacement, though that programme has faced repeated delays. The loss at Prince Sultan exposed the vulnerability of large, slow, high-value airborne assets to modern Ballistic Missiles and has accelerated internal Pentagon debate over how to distribute battle management capability across more survivable, dispersed platforms.

More questions
How significant was the E-3 loss at Prince Sultan?
It was the first combat loss of a US AWACS, created an immediate battle management gap, and forced premature deployment of a not-yet-operational replacement aircraft.Source: lowdown
What is replacing the E-3 Sentry?
The E-7 Wedgetail is the planned replacement, but the EA-37B was deployed as an emergency stopgap after the Prince Sultan loss.Source: USAF