{"product_id":"original-u-s-vietnam-war-aph-5-helicopter-pilot-flying-helmet-likely-by-sierra-engineering-co-incomplete","title":"Original U.S. Vietnam War APH-5 Helicopter Pilot Flying Helmet Likely by Sierra Engineering Co. - Incomplete","description":"\u003cp\u003eOriginal Item: Only One Available. This is an incomplete example of a Vietnam War APH-5 Flying Helmet, as used by all branches of service during the Vietnam War. This Helmet appears to have been very well used, and retains its straps but is missing the microphone and the interior padding. Has a functional clear visor and is likely a size large.\u003c\/p\u003e\n\u003cp\u003eThe original data tag is either under the styrofoam or gone, as we could not find it. But from other examples we’ve had, we believe this example to be by the Sierra Engineering Company. In overall great shape with some chipping of paint, this is a good example of a likely wartime manufactured APH-5 Vietnam War helmet. Comes ready for further research and display.\u003c\/p\u003e\n\u003cp\u003eThe APH-5\u003c\/p\u003e\n\u003cp\u003eThe APH-5 helmet was the result of more than two years studies conducted 1954-56 for a successor to the H-3 and H-4 series of helmets. VX-3 at NAS Atlantic City, the Aero Medical Branch of Service Test Division at NATC Patuxent River, Air Crew Equipment Laboratory, Naval Air Materiel Center, Philadelphia, and AirLant and AirPac Fleet units were among those who cooperated with the Airborne Equipment Division of BuAer in testing the gear. The studies and helmet development work concluded with the MSA-N2 design, an immediate predecessor of the APH-5, being manufactured in very limited quantity. Another contract initiated work on individually fitted (custom fit) helmets, designated the BBC and BBC-X2.\u003cbr\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Original Items","offers":[{"title":"Default Title","offer_id":45303179870277,"sku":"ONJR25MYCA16","price":395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1524\/1342\/files\/ONJR25MYCA16__02.jpg?v=1783351342","url":"https:\/\/www.ima-usa.com\/products\/original-u-s-vietnam-war-aph-5-helicopter-pilot-flying-helmet-likely-by-sierra-engineering-co-incomplete","provider":"International Military Antiques","version":"1.0","type":"link"}