Electrodynamic tethers are electrically conductive cables which operate on electromagnetic principles by converting their kinetic energy into electrical energy and their electrical energy into kinetic energy. An electric potential in generated at the two conducting ends of tether when it travels with a certain velocity in the earth’s magnetic field. The current and the force induced because of this motion is a function of the surrounding plasma environment and the Earth’s magnetic field. The interaction of the tether system with the plasma environment can be used to infer the plasma parameters such as plasma density as an ionospheric probe. Current induced in the electrodynamic tether follows the OML theory like Langmuir probes for calculating the plasma density values. Missions such as TSS-1, PMG, TEPCE have recorded tether current data which varies as function of the plasma parameters signifying its application in conducting multi-point in-situ plasma observations. Many tether experiment missions have been planned in the past but limited data is available due to numerous reasons. This paper presents the potential of using tethers for detecting ionospheric irregularities or a solar event affecting the plasma parameters and explores the evidence and the methods which can be adopted to find a secondary application to tether systems as an ionospheric probe.