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Lockheed AP-2 Neptune — one Crazy Cat

21 September 2011

Lockheed AP-2 Neptune — one Crazy Cat

31º 19′ 25″ N / 85º 42′ 49″ W

This aircraft, and many more, can be seen at the U.S. Army Aviation Museum in Alabama. Though known for her Navy service the Neptune was also flown in during the Vietnam War by the U.S. Army as the AP-2 in service with the 1st Radio Research Company (Aviation) under the call sign “Crazy Cat” for SIGINT (signal intelligence) purposes.

Left profile showing the hybrid power of the late model Neptunes, piston and turbojet — photo by Joseph May

The AP-2 kept the MAD boom of the Navy’s submarine hunter — photo by Joseph May

The Crazy Cat emblem for the mission call signs — photo by Joseph May

Wing tip pod for the electronics sensor equipment — photo by Joseph May

 The Neptune had long range as well as a voluminous fuselage — photo by Joseph May

A web site for the 1st Radio Research Company (Aviation) can be found here

Pasting the museum’s name into the search window will bring up posts about the museum as well as other aircraft there.

6 Comments leave one →
  1. shortfinals permalink
    21 September 2011 22:54

    I hadn’t known about the Army’s use of the Neptune in ‘Nam…..thanks for this!

    • travelforaircraft permalink*
      21 September 2011 23:25

      I share your surprise. There I was one April morning walking the grounds of the Army Aviation Museum, turning the corner of the building and looking at an immense aircraft designed to hunt submarines — quite a juxtaposition 😉

    • James Joseph permalink
      31 March 2012 09:35

      I was in Nam and worked and flew on missions with these birds. 68-69

      • travelforaircraft permalink*
        1 April 2012 02:27

        You were on a rare bird. If you have stories or photos you’d like to share please email me at — and thanks for your service, Joe

  2. John Truesdale permalink
    17 February 2012 17:23

    I have “walk around” photos of a Lockheed AP-2 Neptune used in the Mekong Delta during the Vietnam War. And the 1/72nd scale model I made of it. Interested? I been photographing aircraft for 35 years & have been published. Also I have a cockpit to tailgunners compartment tour a B-36 Peacemaker, which you can’t see now since the Pima Air & Space Museum in Tucson had painted the windos to cut down the heat of the bomber.

    • travelforaircraft permalink*
      18 February 2012 07:55

      Would I be interested in posting about a unique and historic aircraft along with an excellent model (I saw it in the Fine Scale Modeler website) of it? Of course!

      You were fortunate to also be inside the B-36 — you must have a knack for getting to unusual aircraft 🙂

      I’ll email you from with more details, and thanks.

      Thanks again,


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