/ Boeing E-4 (747) AACP
Boeing E-4 (747) AACP
The Boeing E-4 Advanced Airborne Command Post (AACP), the current “Night Watch” aircraft, is a strategic command and control military aircraft operated by the United States Air Force.
The E-4 series are specially modified from the Boeing 747-200B for the National Emergency Airborne Command Post program.
The E-4 serves as a survivable mobile command post for the National Command Authority, namely the President of the United States, the Secretary of Defence, and successors.
The four E-4Bs are operated by the 1st Airborne Command and Control Squadron of the 595th Command and Control Group located at Offutt Air Force Base, near Omaha, Nebraska.
An E-4B when in action is denoted a “National Airborne Operations Centre”.
Three aircraft produced, powered by Pratt & Whitney JT9D-7R4G2 engines.
No bulge to house equipment on top of fuselage.
These were later converted to E-4Bs.
One built and equipped with 52,500-lb CF6-50E2 engines.
Has nuclear electromagnetic pulse protection, nuclear and thermal effects shielding, advanced electronics, and a wide variety of communications equipment.
Up to 108 mission crew
231 ft 4 in (70.51 m)
195 ft 8 in (59.64 m)
63 ft 5 in (19.33 m)
5,500 sq ft (510 m2)
BAC 463 to BAC 468
BAC 469 to BAC 474
410,000 lb (185,973 kg)
800,000 lb (362,874 kg)
Max take-off weight
833,000 lb (377,842 kg)
4 × General Electric F103 turbofan engines, 52,500 lbf (234 kN) thrust each
(General Electric CF6-50E2)
523 kn (602 mph, 969 km/h)
483 kn (556 mph, 895 km/h) / M0.84
6,200 nmi (7,100 mi, 11,500 km)
150+ hours (with refuelling)
45,000 ft (14,000 m)
150 lb/sq ft (730 kg/m2)
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