Prototype Spectre gunship that was converted under Project Gunship II at Wright-Patterson AFB. It carried four 20mm cannon and four 7.62mm multi-barrel guns, used in a 30-degree left bank at night. This AC-130 was sent to Nha Trang AFB in Vietnam on Sept. 21, 1967 for a 90-day test. Other Spectres of 16th SOS based at Ubon flew interdiction missions along the Ho Chi Ming Trail from 1968 onward, destroying many trucks. This aircraft carries the emblem of Air Force Systems Command on the left side.

This was the first C-130 to be converted to a AC-130 'Spectre' Gunship, the conversion being carried out at Wright-Patterson AFB. It is fitting, therefore, that she is now on display there at the wonderful National Museum of the USAF.