Which agency conducts experimentation on methods for detecting airframe ice in civil aviation?

NASA, or the National Aeronautics and Space Administration, is the agency responsible for conducting experimentation on methods for detecting airframe ice in civil aviation. NASA has the necessary resources and expertise in aeronautics research, making it well-suited for exploring innovative technologies and techniques related to aviation safety. The agency often collaborates with other organizations and conducts various studies to address challenges faced in the aviation industry, including ice detection on aircraft.

The focus of NASA's research initiatives includes developing advanced detection systems and improving existing technologies to enhance safety in aviation operations. Ice accumulation can significantly affect an aircraft's performance and safety, and through its research, NASA aims to provide valuable data and solutions to the aviation community.

In contrast, while the FAA (Federal Aviation Administration) is primarily focused on regulating and overseeing civil aviation safety, it does not conduct experimental research in the same capacity as NASA. The NTSB (National Transportation Safety Board) investigates accidents and makes safety recommendations but does not engage in experimentation. The DOT (Department of Transportation) oversees transportation at a broader level and facilitates various agencies like the FAA but also does not conduct this type of specific research. Thus, NASA stands out as the correct agency for this specific focus on airframe ice detection in civil aviation.