Boeing E-3 Sentry








1st Flight 1972

Crew: Flight crew: 4 (aircraft commander, pilot, navigator, flight engineer)

Mission crew: 13–19

Length: 152 ft 11 in (46.61 m)

Wingspan: 145 ft 9 in (44.42 m)

Height: 41 ft 4 in (12.60 m)

Wing area: 3,050 sq ft (283 m2)

Empty weight: 185,000 lb (83,915 kg)

Gross weight: 344,000 lb (156,036 kg)

Max takeoff weight: 347,000 lb (157,397 kg)

Powerplant: 4 × Pratt and Whitney TF33-PW-100A turbofan, 21,500 lbf (96 kN) thrust each


Maximum speed: 461 kn (531 mph, 854 km/h)

Cruise speed: 310 kn (360 mph, 580 km/h) optimum

Range: 4,000 nmi (4,600 mi, 7,400 km)

Endurance: more than 8 hours without refuelling

Service ceiling: 29,000 ft (8,800 m) minimum


AN/APS-133 colour weather radar

Westinghouse Corporation AN/APY-1 or AN/APY-2 passive electronically scanned array radar system





EC-137D-2 prototype AWACS aircraft with JT3D engines, 1 fitted with a Westinghouse Electric radar and 1 with a Hughes Aircraft Company radar. Both converted to E-3A standard with TF33 engines.

E-3A-Production aircraft with TF33 engines and AN/APY-1 radar, 24 built for USAF (later converted to E-3B standard), total of 34 ordered but the last 9 completed as E-3C. One additional aircraft retained by Boeing for testing, 18 built for NATO with TF33 engines and 5 for Saudi Arabia with CFM56 engines.

KE-3A-These are not AWACS aircraft but CFM56 powered tankers based on the E-3 design. 8 were sold to Saudi Arabia.

E-3B-E-3As with improvements, 24 conversions.

E-3C-Production aircraft with AN/APY-2 radar, additional electronic consoles and system improvements, ten built.

JE-3C-One E-3A aircraft used by Boeing for trials later redesignated E-3C.

E-3D-Production aircraft for the RAF to E-3C standard with CFM56 engines and British modifications designated Sentry AEW.1, 7 built. Modifications included the addition of a refuelling probe next to the existing boom AAR receptacle, CFM-56 engines, wingtip ESM pods, an enhanced Maritime Surveillance Capability (MSC) offering Maritime Scan-Scan Processing (MSSP), JTIDS and Havequick 2 radios.

E-3F-Production aircraft for the French Air and Space Force to E-3C standard with CFM56 engines and French modifications, 4 built.

E-3G-USAF Block 40/45 modification. Includes hardware and software upgrades to improve communications, computer processing power, threat tracking, and others, and automates some previously manual functions. initial operating capability (IOC) reached in July 2015.


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