Built as a P2V-7 and delivered to the US Navy in September 1955 as 135620. Converted to a P2V-7S in 1960. Converted to an AP-2H in 1967, modified for use in Vietnam under project TRIM (Trails and Roads Interdiction Mulitsensor). Transferred to the Military Aircraft Storage and Disposal Center (MASDC) with inventory number 1P0197 in June 1975. To Pima that same month.