The 19th Air Refueling Squadron (19 ARS) is an inactive unit of the United States Air Force. At the time of its inactivation, it was based at Otis Air Force Base. On 19 Sep 1985 the 19th Air Refueling Squadron,(Medium), was consolidated with the 19th Ferrying Squadron, a unit that was last active 31 Mar 1944. This action was directed by Department of the Air Force Letter DAF/MPM 662q Attachment 2 (Inactive Units), 19 Sep 1985. The Consolidated Unit will retain the Designation of 19th Air Refueling Squadron, Heavy".