The E-6 is found in two variants both built from a basic Boeing 707-300. The E-6A was designed to replace the EC-130[?] and was accepted by the US Navy in August 1989, sixteen were delivered up to 1992. The E-6B was a modified E-6A with additional equipment and positions to replace the EC-135. The E-6B includes an airborne launch control system, allowing it to fire the US ICBM arsenal. The first E-6B was accepted in December 1997 and the entire E-6 fleet is in the process of being modified to the E-6B standard.
E-6B
- Length: 45.8 m
- Wingspan: 45.2 m
- Height: 12.9 m
- Weight: (Maximum) 154,400 kg
- Propulsion: Four CFM-56-2A-2 High bypass turbofans
- Speed: 960 km/hr
- Ceiling: 12,200 m
- Range: 12,144 km, with 6 hours loiter time
- Crew: 22
- Cost: $141.7 million