 Equipment upgraded to P-47 Thunderbolts and lastly P-40 Warhawks.Was disbanded in May 1944 with reorganization of training units, personnel and equipment absorbed by "Squadron B", 336th AAF Base Unit (Replacement Training Unit, Fighter).The wartime 303d Fighter Squadron was reconstituted and redesignated as the 139th Fighter Squadron, and was allotted to the New York Air National Guard, on 24 May 1946.