WC-135W Constant Phoenix

Current as of March 20, 2023.

The WC-135R Constant Phoenix atmospheric collection aircraft supports national level consumers by collecting particulate and gaseous effluents and debris from accessible regions of the atmosphere in support of the Limited Nuclear Test Ban Treaty of 1963.

The aircraft is a modified KC-135R. The Constant Pheonix's modifications are primarily related to its on-board atmospheric collection suite, which allows the mission crew to detect radioactive "clouds" in real time.