Built as S-3A and delivered to the US Navy in 1978 as 160604. Transferred to VS-31, USS Dwight D Eisenhower by 1990. Converted to S-3B after November 1990. Assigned AMARc code 2S0070 in November 2004. Left the 309th Aerospace Maintenance and Regeneration Center (AMARC) in April 2005 and and went to Pima in 2006.