On the occasion of the Critical Design Review meeting (CDR) for the new HALO „Trace Gas Inlet“ (TGI) the first prototype inlet was pre- installed to HALO. The inlet fits to its mounting provisions and passed the CDR successfully. A first demonstration of the variability of the tubing system was presented to the colleagues of the „Institut für Physik der Atmosphäre“ (IPA) at „Deutsches Zentrum für Luft- und Raumfahrt“ (DLR).