Boeing E-3 Sentry - Variants

Variants

EC-137D

Two prototype AWACS aircraft with JT3D engines, one fitted with a Westinghouse Electric radar and the other 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 five for Saudi Arabia with CFM56 engines.

KE-3A

These are not AWACS aircraft but CFM56 powered tankers based on the E-3 design. Eight 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 Royal Air Force to E-3C standard with CFM56 engines and British modifications designated Sentry AEW.1, seven built.

E-3F

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

E-3G

USAF Block 40/45 modification.