The 198th Airlift Squadron (198 AS) was the last flying squadron of the Puerto Rico Air National Guard (PRANG) 156th Airlift Wing located at Muñiz Air National Guard Base, in Carolina, Puerto Rico. The 198th last assigned aircraft was the WC-130H Hercules. The 198th was established in October 1944 as the 463d Fighter Squadron, was re-designated as the 198th and allotted to the PRANG in May 1946, redesignated from fighter to airlift in October 1998, and was inactivated on 31 December 2019.