{"id":18294840,"date":"2026-08-30T23:20:33","date_gmt":"2026-08-30T21:20:33","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/flying-flea-mignet-pou-du-ciel\/"},"modified":"2026-08-30T23:22:33","modified_gmt":"2026-08-30T21:22:33","slug":"flying-flea-mignet-pou-du-ciel","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/es\/flying-flea-mignet-pou-du-ciel\/","title":{"rendered":"Flying Flea: The DIY Plane That Sparked a Deadly Craze"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\r\n\r\n<p>In the mid-1930s, a French carpenter&rsquo;s dream put aviation within reach of the ordinary man. Henri Mignet&rsquo;s Flying Flea &mdash; the <em>Pou-du-Ciel<\/em>, or &ldquo;Louse of the Sky&rdquo; &mdash; was a tiny wooden aeroplane that anyone could build in a garden shed from a book of plans, with no pilot&rsquo;s licence and, Mignet cheerfully insisted, barely any flying skill.<\/p>\r\n<p>Thousands believed him. Across France, Britain and beyond, amateurs hammered together Fleas from spruce and fabric and taught themselves to fly. It was the drone craze of its day &mdash; a genuine popular aviation movement.<\/p>\r\n<p>Then the Fleas began to dive into the ground, and no one aboard could pull them out. What began as a joyful democratisation of flight turned, within a couple of years, into one of aviation&rsquo;s most infamous cautionary tales.<\/p>\r\n\r\n<div style=\"background:#f5f5f5;padding:20px 24px;margin:24px 0;border-radius:8px;font-size:15px;line-height:1.8\"><p style=\"margin:0 0 10px;font-weight:700;font-size:17px\">Datos r\u00e1pidos<\/p><strong>Dise\u00f1ador:<\/strong> Henri Mignet (1893-1965), France<br><strong>First flight (HM.14):<\/strong> 10 September 1933<br><strong>Plans:<\/strong> &ldquo;Le Sport de l&rsquo;Air&rdquo;, published 1934 (English translation 1935)<br><strong>Configuraci\u00f3n:<\/strong> tandem\/staggered wing, two controls (stick + rudder), no ailerons; ~17 hp<br><strong>Dimensions (prototype):<\/strong> span ~19.5 ft (5.9 m), length ~11.5 ft (3.5 m), gross ~450 lb<br><strong>Fatal flaw:<\/strong> unrecoverable pitch-down dive; UK restrictions after the Penshurst crash, 4 May 1936<\/div>\r\n\r\n<h2 style=\"padding-top:22px\">A Model T for the sky<\/h2>\r\n<p>Henri Mignet was a self-taught French designer who wanted an aircraft simple enough for anyone to build and fly. After years of prototypes, he made the first flight of his HM.14 on 10 September 1933. In 1934 he published <em>Le Sport de l&rsquo;Air<\/em>, a book giving complete plans and instructions so readers could construct and fly their own Flea without specialist help. Translated into English in 1935, it prompted hundreds of people around the world to start building.<\/p>\r\n<p>The Flea was deliberately radical. It was a tandem-wing design with just two flying controls &mdash; a stick and a rudder, no ailerons and no rudder pedals. The stick pivoted the front wing to control pitch and worked the large rudder for turns.<\/p>\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img data-opt-id=1778983481  fetchpriority=\"high\" decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:QtKd.cfff\/w:auto\/h:auto\/q:mauto\/ig:avif\/https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/08\/building-pou-du-ciel-garden.jpg\" alt=\"Building a Pou du Ciel in a garden\" style=\"width:100%;height:auto;max-width:100%;display:block;border-radius:6px\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">The whole point of the Flea: an aeroplane you could build in your own garden. Photo: Wikimedia Commons.<\/figcaption><\/figure>\r\n<h2 style=\"padding-top:22px\">The craze<\/h2>\r\n<p>The little aircraft caught the public imagination completely. By 1936 it was estimated that construction cost about &pound;75 and that some five hundred Fleas were under way in Britain alone. Mignet&rsquo;s original prototype was powered by a modest 17 hp motorcycle engine, spanned about 19.5 ft, and weighed roughly 450 lb gross. It was, by any measure, a genuine people&rsquo;s aeroplane.<\/p>\r\n<p>The appeal was freedom: build it yourself, in your own time, and go flying. For a brief moment the Flea looked like the future of grassroots aviation.<\/p>\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #1565c0;padding:20px 22px;margin:18px 0 24px;border-radius:0 8px 8px 0;font-size:16px;line-height:1.7\"><em>&ldquo;All the components worked, but not together.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Henri Mignet<\/strong> &mdash; on his early HM.2 design (from Pontois, &ldquo;Biographie d&rsquo;Henri Mignet&rdquo;)<\/div><\/div>\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/YyrZRZJdNkY\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<h2 style=\"padding-top:22px\">The dive with no recovery<\/h2>\r\n<p>Then came the crashes. Under certain conditions the Flea could enter a shallow dive from which no amount of stick could recover it. The cause was a deadly interaction between the two closely spaced wings: when the front wing reached a high angle, airflow deflected off it accelerated over the rear wing, sharply increasing its lift and pushing the nose down. The pilot&rsquo;s instinct, to pull back, only made things worse.<\/p>\r\n<p>Because Mignet had tested his prototype with a low-powered engine, he never met the problem; it emerged only when builders fitted bigger engines. In Britain, restrictions followed a fatal crash at Penshurst airfield, Kent, on 4 May 1936. Wind-tunnel tests at the Royal Aircraft Establishment and in France then pinned down the flaw.<\/p>\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img data-opt-id=681367449  fetchpriority=\"high\" decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:QtKd.cfff\/w:auto\/h:auto\/q:mauto\/ig:avif\/https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/08\/mignet-hm14-flying-flea-gaebb.jpg\" alt=\"Surviving 1936 Mignet HM.14 Flying Flea G-AEBB\" style=\"width:100%;height:auto;max-width:100%;display:block;border-radius:6px\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">A surviving 1936-built HM.14, from the height of the Flea craze. Photo: Wikimedia Commons.<\/figcaption><\/figure>\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #5C91FF;padding:20px 22px;margin:18px 0 24px;border-radius:0 8px 8px 0;font-size:16px;line-height:1.7\"><em>&ldquo;Anyone who can nail a packing-case together can build my plane.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Henri Mignet<\/strong> &mdash; the Flying Flea&rsquo;s creator, on how simple his aeroplane was to build<\/div><\/div>\r\n<h2 style=\"padding-top:22px\">Redeemed, too late<\/h2>\r\n<p>Changes to the airfoil and wing spacing cured it, and later Mignet designs flew perfectly safely &mdash; the basic layout has since proved sound in hundreds of homebuilts and microlights. But the wave of bad publicity had done its damage.<\/p>\r\n<p>The Flea never fully shook its dangerous reputation, and the craze burst as quickly as it had bloomed. Yet Mignet&rsquo;s real legacy survived: the idea that flight need not be the preserve of the rich or the professional &mdash; that an ordinary person, with plans and patience, could build wings in a shed and fly.<\/p>\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/itMDL-JIFfs\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/iRS9j732Cw8\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<p style=\"font-size:14px;color:#777\"><em>Sources: Wikipedia; Smithsonian National Air and Space Museum; Newark Air Museum; RAF Museum; EAA; &ldquo;Flight&rdquo; magazine archive (1936).<\/em><\/p>\r\n\r\n<div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px;border-radius:0 8px 8px 0\"><p style=\"margin:0 0 8px;font-weight:600;color:#333\">Publicaciones relacionadas<\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/es\/christmas-bullet-worst-aircraft-ever-built\/\">Christmas Bullet: The Worst Aircraft Ever Built<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/es\/nueve-alas-lago-maggiore-caproni-ca60-transaereo\/\">Nueve alas en el Lago Maggiore: El Caproni Ca.60<\/a><\/p><\/div>","protected":false},"excerpt":{"rendered":"<p>In the mid-1930s, a French carpenter&rsquo;s dream put aviation within reach of the ordinary man. Henri Mignet&rsquo;s Flying Flea &mdash; the Pou-du-Ciel, or &ldquo;Louse of the Sky&rdquo; &mdash; was a tiny wooden aeroplane that anyone could build in a garden shed from a book of plans, with no pilot&rsquo;s licence and, Mignet cheerfully insisted, barely [&hellip;]<\/p>\n","protected":false},"author":25,"featured_media":18294782,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[665,666],"tags":[],"class_list":["post-18294840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation-world","category-history-and-legends"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Flying Flea: The DIY Plane That Sparked a Deadly Craze | MiGFlug<\/title>\n<meta name=\"description\" content=\"The Flying Flea let anyone build a plane in a shed \u2014 until a 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