Sentry

David C Isby reviews the US Air Force upgraded E-3G Sentry and its international counterparts

MILITARY

Upgraded US Air Force Boeing E-3G Block 40/45 Sentry Airborne Warning and Control System (AWACS) aircraft have carried out combat missions in the Middle East, airspace monitoring in Eastern Europe and the western Pacific and guided interceptors to Russian bomber fly-bys in international airspace.

An upgrade package developed by Boeing dubbed Block 40/45 is at the heart of the changes that transform earlier E-3 models to E-3Gs, increasing capabilities and reliability and reducing sustainment costs.

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