Quickboost continues its aftermarket parts for the 1/48 Kinetic S-2F Tracker family with a part labeled as the Tracker’s radar. First and foremost, this isn't part of the radar. It is really the MAD (Magnetic Anomaly Detector) boom which extends from the back of the plane as it looks for submarines. A good picture of the boom extended is: https://commons.wikimedia.org/wiki/File:S-3A_VS-32_1982.JPEG#/media/Fil….
In looking through internet pics, it looks like the boom was always retracted while on the ground.