The 601 is equipped with which American all-weather, carrier-capable tactical airborne early warning (AEW) aircraft?
601st Squadron (JASDF):  It is equipped with Northrop Grumman E-2C Hawkeye aircraft. Northrop Grumman E-2 Hawkeye: The Northrop Grumman E-2 Hawkeye is an American all-weather, carrier-capable tactical airborne early warning (AEW) aircraft.
Northrop Grumman E-2C Hawkeye