Boeing EC-135

Boeing EC-135
Mike Freer - Touchdown-aviation · GFDL 1.2 · source
Name	Boeing EC-135
Type	"Electronic warfare/command and control aircraft"
Manufacturer	"Boeing"

Boeing EC-135 is a family of United States Boeing-built military aircraft derived from the Boeing 707 and C-135 Stratolifter airframes, modified for airborne command, control, communications, electronic warfare, and airborne warning roles. The EC-135 served extensively with the United States Air Force, United States Navy, and allied air arms during the Cold War, the Vietnam War, the Gulf War, and post-Cold War operations, operating alongside systems like the E-3 Sentry, E-4B Nightwatch, and RC-135. The type provided survivable airborne command posts, strategic communications relay, and electronic countermeasure capabilities integrated with national assets such as the North American Aerospace Defense Command and the Strategic Air Command.

Development and Design

The EC-135 program originated from requirements generated by organizations such as the United States Air Force, the Department of Defense, and planners from Air Combat Command and Strategic Air Command to adapt the C-135 Stratolifter for specialized missions related to North Atlantic Treaty Organization posture and nuclear command resilience. Engineers at Boeing Commercial Airplanes collaborated with contractors including Raytheon, Northrop Grumman, Hughes Aircraft Company, and Martin Marietta to install advanced communications suites, antenna arrays, and electronic warfare systems derived from work on the Lockheed EC-121 Warning Star and the Boeing E-3 Sentry. Structural modifications included reinforced floors, auxiliary power units similar to those on Boeing 747, and mission consoles developed with input from Air Force Systems Command and the Defense Communications Agency. Avionics integration involved cipher equipment certified by the National Security Agency and interoperability testing with platforms like the U-2 Dragon Lady and the RC-135V/W Rivet Joint.

Variants

Multiple EC-135 variants addressed discrete mission sets for commands such as the Strategic Air Command, Air Combat Command, and the Defense Communications Agency: - EC-135C: configured as an airborne command post supporting presidential and national leadership continuity alongside assets like the E-4B Nightwatch and communication links to Cheyenne Mountain Complex. - EC-135G and EC-135L: tailored for the Post Attack Command and Control System in coordination with North American Aerospace Defense Command and Strategic Air Command nuclear planning. - EC-135H: electronic warfare adaptation interoperating with fleets including F-4 Phantom II and F-15 Eagle during testing with Tactical Air Command. - EC-135K: communications relay variant used to support theater commanders working with units such as U.S. Central Command and headquarters elements like 12th Air Force. - EC-135N/P: configured for airborne command post missions during exercises with United States European Command and NATO allies including Royal Air Force and French Air Force. Many systems borrowed technology from programs like Project Looking Glass and the Airborne Launch Control System to provide survivable control of strategic assets such as Minuteman ICBMs and bomber forces like the B-52 Stratofortress.

Operational History

EC-135 airframes entered service amid Cold War readiness initiatives coordinated by Strategic Air Command and were deployed to bases including Offutt Air Force Base, Beale Air Force Base, and Andersen Air Force Base. Crews from units such as the 2nd Airborne Command Control Squadron and the 2d Airborne Command Control Squadron executed continuous airborne alert and command missions alongside Operation Chrome Dome and later contingency operations tied to Operation Desert Storm. Deployments included cooperation with the United States European Command during NATO exercises like Able Archer and Reforger, and support roles during crises such as the Cuban Missile Crisis aftermath planning and the Vietnam War air operations. Over time, missions transitioned to newer platforms including the E-6 Mercury and the E-4B, and remaining EC-135s were retired or converted for range support with organizations like the Air Force Flight Test Center.

Missions and Roles

EC-135 missions encompassed airborne command and control to ensure continuity for national leadership represented by links to the President of the United States and the Secretary of Defense, long-range communications relay supporting theater commanders such as those in U.S. Central Command and U.S. European Command, and electronic warfare operations to counter threats posed by Soviet-era systems including those deployed by the Soviet Air Defence Forces. The aircraft served in airborne command networks like the Post Attack Command and Control System and provided airborne launch control for ICBMs via the Airborne Launch Control System. It also performed electronic intelligence collection in coordination with units flying the RC-135 Rivet Joint and provided range telemetry and chase support for test ranges run by Air Force Materiel Command and National Aeronautics and Space Administration programs.

Operators

Primary and notable operators included the United States Air Force units such as the 38th Strategic Reconnaissance Squadron, the 2d Airborne Command Control Squadron, and the 1st Airborne Command Control Squadron, as well as overseas NATO users who hosted EC-135 visits from commands including United States European Command and headquarters like NATO Allied Command Operations. Contractors and government agencies such as the Defense Advanced Research Projects Agency and the National Reconnaissance Office interfaced with EC-135 crews during mission planning. Support and maintenance were provided by depots linked to Air Force Logistics Command and industrial partners including Boeing Wichita facilities.

Accidents and Incidents

EC-135 airframes experienced incidents during their operational lifetime, investigated by agencies such as the National Transportation Safety Board and Air Force Safety Center. Notable mishaps involved in-flight emergencies during deployments to Andersen Air Force Base and training sorties linked to units at Offutt Air Force Base, with subsequent reviews by Air Staff committees and updates to flight crew procedures overseen by Air Education and Training Command. Lessons learned influenced successor platforms like the E-6 Mercury and the E-4B Nightwatch, and resulted in upgraded safety protocols coordinated with organizations including Federal Aviation Administration and Defense Logistics Agency.

Category:Boeing aircraft Category:United States Air Force aircraft