This Tracker never served as an airtanker, and was never officially registered. It is an S2F-1, ex BuA136745, which was delivered to the Japanese Navy on 12 Mar 1959 as 4146. In Oct 1983 it was acquired by Hemet Valley Flying Service as a spares aircraft and stored at at the Hemet-Ryan airtanker base. In 2001 it was restored and placed on display as a memorial. The text on the memorial plaque reads: "Dedicated in memory of Lloyd M. Venable - A pioneer in the aviation industry - Founder of Hemet Valley Flying Service - 1946. Born Oct 3, 1906 - Died Feb 1, 1991."