The Boeing E-3 Sentry is a U.S. military airborne warning and control system (AWACS) aircraft based on the Boeing 707 that provides all-weather surveillance, command, control and communications. It is used by countries such as the United States, the United Kingdom, France, Saudi Arabia and NATO air defence forces. It is distinguished by the disc-shaped rotodome above the fuselage. Production ended in 1992 after 68 had been built. The Royal Air Force operates seven E-3D's, with CFM56 engines, designated Sentry AEW 1. Complete package for FSX/SP2 with custom 2D and VC panels, sound package by Aaron Swindle. By Jean-Pierre Brisard and Bob May - Premier Aircraft Design.