Built for US Navy as an S2F-1 anti-submarine aircraft. Later converted to S2F-1T trainer, redesignated to TS-2A in 1962 and serving with VT-28 Squadron. In storage at MASDC circa Sep 1970 with inventory code 1S257, but soon returned to service. Back to MASDC in Apr 1978, now as 1S703. Became N423DF(2) in 1985 and converted to airtanker for Hemet Valley Flying Service. Flew as Tanker 77, then Tanker 84. Withdrawn from use circa 2004.