9. Sentry E-3G
Commenced to Serve: 1972
1992–1997 (G upgraded in 2015)–retired
Expense: *$270 million
The E-3 Sentry is an airborne early warning and control aircraft, more often known as AWACS. Boeing also designed the 707, from which the Sentry was derived. NATO, the USAF, the RAF, the FAF, and the RSAF have all utilised the Boeing Sentry. The radar dome that revolves above the fuselage of the Sentry makes it easier to identify.
Twitter.com/E-3G Sentry @JetPhotos
There were 68 aircraft produced. The most recent model produced was the E-3G. The upgrade is for USAF Block 40/45. Its technology and software have been updated, improving computer processing, communications, threat tracking, and the automation of traditionally manual tasks like IOC.
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