{"id":24614503,"date":"2026-09-25T10:58:59","date_gmt":"2026-09-25T08:58:59","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/bye-aerospace-eflyer-2-first-flight-centennial-airport-2026\/"},"modified":"2026-10-01T15:26:59","modified_gmt":"2026-10-01T13:26:59","slug":"bye-aerospace-eflyer-2-first-flight-centennial-airport-2026","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/fr\/bye-aerospace-eflyer-2-first-flight-centennial-airport-2026\/","title":{"rendered":"eFlyer 2 Flies at Centennial: Bye Aerospace Starts Flight Tests"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\n<!-- mfsh:top -->\n\n<style>\n.mfsh-trigger{display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 18px;margin:0 0 26px;border:2px solid 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Nothing about that is remarkable except what was not happening: no fuel burn, no exhaust, and no engine overhaul clock ticking.<\/p>\r\n\r\n<p>Bye Aerospace has flown the eFlyer 2, its all-electric trainer, with chief test pilot Elliot Seguin at the controls. Bye Aerospace announced the flight on 24 September 2026. It came the day after the aircraft received its FAA special airworthiness certificate on 16 September, and it opens the aircraft&rsquo;s formal flight test programme on the road to FAA certification.<\/p>\r\n\r\n<p>One clarification is worth making, because it says something about how long this has taken. Bye Aerospace first flew an eFlyer 2 proof-of-concept aircraft, then called the Sun Flyer 2, back in April 2018, and flew it again in February 2019 with a Siemens SP70D motor. That aircraft was a proof of concept, not a prototype of the aircraft now being certified. What flew in September is serial number 001, the aircraft that matters for certification, and the eight-year gap between the two is the real story of electric aviation.<\/p>\r\n\r\n\r\n<div style=\"background:#f1f3f6;border-left:4px solid #5C91FF;padding:18px 22px;margin:26px 0\"><p style=\"margin:0 0 10px;font-weight:700;color:#0d1117;font-size:17px\">Quick Facts<\/p><ul style=\"margin:0;padding-left:20px;font-size:15px;line-height:1.7;color:#333\"><li style=\"margin:0 0 6px\"><strong>Aircraft:<\/strong> Bye Aerospace eFlyer 2, an all-electric two-seat training aircraft<\/li><li style=\"margin:0 0 6px\"><strong>Flight:<\/strong> 17 September 2026, from Centennial Airport near Denver, Colorado; airborne from 9:45 to 9:51 am MT, about six minutes (announced 24 September)<\/li><li style=\"margin:0 0 6px\"><strong>Pilot:<\/strong> Elliot Seguin, Bye Aerospace chief test pilot<\/li><li style=\"margin:0 0 6px\"><strong>Motor:<\/strong> All-electric, 125 kW (167 hp)<\/li><li style=\"margin:0 0 6px\"><strong>Battery:<\/strong> About 90 kWh capacity<\/li><li style=\"margin:0 0 6px\"><strong>Endurance:<\/strong> 2+ hours mission time; recharge in under 30 minutes<\/li><li style=\"margin:0 0 6px\"><strong>Airframe:<\/strong> 37.8 ft wingspan, two seats side by side, Garmin G500 TXi avionics<\/li><li style=\"margin:0 0 6px\"><strong>Utilisation:<\/strong> 6+ sorties a day, according to Bye Aerospace<\/li><li style=\"margin:0 0 6px\"><strong>Company claim:<\/strong> Up to 80 per cent lower operating costs and no in-flight emissions<\/li><li style=\"margin:0 0 6px\"><strong>Certification basis:<\/strong> 14 CFR Part 23, Amendment 64<\/li><\/ul><\/div>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">The number that sells it<\/h2>\r\n\r\n<p>Flight training economics are dominated by two things nobody can control: the price of avgas and the cost of overhauling a piston engine. An electric trainer removes both. There is no fuel bill in the conventional sense, no oil change, no cylinder work, no time-between-overhaul countdown. Bye Aerospace claims up to 80 per cent lower operating costs, and while manufacturer figures deserve scepticism, the direction is not in doubt.<\/p>\r\n\r\n<p>That matters because the global shortage of pilots is at least partly a shortage of affordable hours. A flight school that can cut the cost of a training hour substantially changes who can afford to learn.<\/p>\r\n\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #1565c0;padding:20px 22px;margin:18px 0 24px;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><div><em>&ldquo;The first flight of eFlyer 2 exceeded all of our expectations in terms of aerodynamics, handling, propulsion and overall performance, and there were no maintenance discrepancies during the flight.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Rod Zastrow<\/strong> &mdash; Chief Executive Officer, Bye Aerospace<\/div><\/div><\/div>\r\n\r\n\r\n<p>Seguin, who flew it, was more measured about what a first flight actually proves. He described it as validating the work the engineering team had put in over several years, and noted that first flights are significant moments any team remembers. Neither man claimed the aircraft is finished. A first flight opens a test programme; it does not close one.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/bye-aerospace-eflyer-2-taxiing-centennial-airport.jpg\" alt=\"Bye Aerospace eFlyer 2 all-electric trainer taxiing at Centennial Airport near Denver\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">The eFlyer 2 taxiing at Centennial Airport near Denver, where it flew its first test profile. Photo: Bye Aerospace<\/figcaption><\/figure>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">The problem nobody has solved<\/h2>\r\n\r\n<p>Endurance. Bye Aerospace quotes more than two hours of mission time for the eFlyer 2, with a recharge in under 30 minutes and six or more sorties a day. That fits circuits and local training sorties, the bread and butter of a flight school, but not a long cross-country navigation exercise with reserves in a headwind. Batteries store roughly a fiftieth of the energy per kilogram that kerosene does, and no amount of clever engineering closes that gap.<\/p>\r\n\r\n<p>Then there is the charging infrastructure, which barely exists at general aviation fields, and the question of battery life. A training aircraft flies many short cycles a day, and cycling is exactly what wears a lithium-ion pack. The economic case depends heavily on how often those packs need replacing, and that is a number nobody will know properly until a fleet has been in service for years.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/bye-aerospace-eflyer-2-charging-hangar.jpg\" alt=\"Bye Aerospace eFlyer 2 connected to a charger in the company hangar\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">The eFlyer 2 on charge in the hangar. Bye Aerospace says a recharge takes less than 30 minutes. Photo: Bye Aerospace<\/figcaption><\/figure>\r\n\r\n\r\n<p>Pipistrel has been here first. Its Velis Electro became the world&rsquo;s first type-certificated electric aircraft in 2020, and it flies today at European flight schools with around an hour of endurance. It proved the concept works and simultaneously demonstrated its limits. The eFlyer 2, if it certifies with the endurance Bye claims, would be a meaningful step beyond that.<\/p>\r\n\r\n<p>If. The aircraft has been in development for more than a decade, has changed motor supplier along the way, and has now flown serial number 001. The next few years of flight testing will decide whether electric training aircraft become a category or stay a demonstration.<\/p>\r\n\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\/zmYUOxldKAA\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n\r\n<p style=\"font-size:13px;color:#777;text-align:center;margin-top:-10px;font-style:italic\">Bye Aerospace&rsquo;s own footage of the flight, released when the flight was announced.<\/p>\r\n\r\n<p><em>Updated 29 September 2026: photographs replaced with Bye Aerospace imagery, technical data updated to Bye Aerospace's current eFlyer 2 specifications, and the aircraft flown in 2018 correctly described as a proof-of-concept aircraft rather than a prototype. The first-flight date has also been corrected to 17 September 2026, as confirmed by Bye Aerospace; the flight was announced on 24 September.<\/em><\/p>\r\n\r\n<p><em>Sources: Bye Aerospace (flight date and times confirmed to MiGFlug); Bye Aerospace press release (24 September 2026) and eFlyer 2 technical data (byeaerospace.com); General Aviation News; FLYING Magazine; FlightGlobal; Wikipedia for development chronology. Photography: Bye Aerospace.<\/em><\/p>\n\n<!-- mfsh:bottom -->\n\n<button type=\"button\" class=\"mfsh-trigger mfsh-bottom\" data-mfsh-placement=\"bottom\" aria-haspopup=\"dialog\"><svg><use href=\"#mfsh-i-share\"\/><\/svg>Share this story<\/button>\n\n<!-- \/mfsh:bottom -->\n\n\r\n\r\n\r\n<style>.mfq{margin:34px 0 8px}.mfq h2{font:26px\/1.3 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117;padding-top:22px;margin:0 0 6px}.mfq .qa details{border-top:1px solid #5C91FF;margin:0;padding:0}.mfq .qa details:last-of-type{border-bottom:1px solid #e2e7ee}.mfq .qa summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;font:18px\/1.7 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117}.mfq .qa summary::-webkit-details-marker{display:none}.mfq .qa summary::after{content:\"+\";font:24px Helvetica,sans-serif;color:#3568e0;flex:0 0 auto}.mfq .qa details[open] summary::after{content:\"\\2013\"}.mfq .qa details:hover summary{color:#3568e0}.mfq .qa .a{font:16px\/1.7 \"Gilroy regular\",Helvetica,Arial,sans-serif;color:#454e5e;padding:0 26px 24px}.mfq .qa .a a{color:#3568e0}@media(max-width:680px){.mfq .qa summary{padding:18px 14px;font-size:17px}.mfq .qa .a{padding:0 14px 20px}}<\/style>\r\n\r\n\r\n<section class=\"mfq\"><h2>Frequently Asked Questions<\/h2><div class=\"qa\"><details open><summary>What is the Bye Aerospace eFlyer 2?<\/summary><div class=\"a\">It is an all-electric two-seat training aircraft built by Bye Aerospace of Colorado, aimed at flight schools. It has a 125 kW (167 hp) electric motor and a battery of about 90 kWh, with side-by-side seating and Garmin G500 TXi avionics, and is being certified under 14 CFR Part 23, Amendment 64.<\/div><\/details><details><summary>When did the eFlyer 2 first fly?<\/summary><div class=\"a\">Serial number 001, the aircraft that opens the certification flight test programme, flew on 17 September 2026 from Centennial Airport near Denver, lifting off at 9:45 am Mountain Time and touching down at 9:51 after about six minutes in the air. Bye Aerospace announced the flight on 24 September 2026. A proof-of-concept aircraft, then called the Sun Flyer 2, first flew in April 2018; it was not a prototype of the certification aircraft.<\/div><\/details><details><summary>How long can the eFlyer 2 stay airborne?<\/summary><div class=\"a\">Bye Aerospace quotes more than two hours of mission time for the eFlyer 2, with a recharge in under 30 minutes and six or more sorties a day. That suits circuits and local training sorties, but not long cross-country exercises with reserves, because batteries store roughly a fiftieth of the energy per kilogram that aviation fuel does.<\/div><\/details><details><summary>How much cheaper is an electric trainer to operate?<\/summary><div class=\"a\">Bye Aerospace claims up to 80 per cent lower operating costs. Electric aircraft avoid fuel bills, oil changes, cylinder work and engine overhaul reserves, though the real figure depends heavily on how often battery packs must be replaced, which fleet experience has not yet established.<\/div><\/details><details><summary>Is there already a certified electric aircraft?<\/summary><div class=\"a\">Yes. The Pipistrel Velis Electro became the world\u2019s first type-certificated electric aircraft in 2020 and flies at European flight schools today, with around an hour of endurance. It proved the concept and also demonstrated the endurance limits electric trainers face.<\/div><\/details><details><summary>Who flew the eFlyer 2 on its first flight?<\/summary><div class=\"a\">Elliot Seguin, Bye Aerospace\u2019s chief test pilot. He flew the planned test profile from Centennial Airport, allowing an initial evaluation of handling qualities, aerodynamic characteristics and system performance to support the next phase of testing.<\/div><\/details><details><summary>What are the biggest obstacles to electric flight training?<\/summary><div class=\"a\">Energy density, charging infrastructure and battery life. Training aircraft fly many short cycles a day, and cycling is what wears lithium-ion packs. Most general aviation airfields also have no charging provision, which limits where an electric fleet can realistically operate.<\/div><\/details><\/div><\/section>\r\n\r\n\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the Bye Aerospace eFlyer 2?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It is an all-electric two-seat training aircraft built by Bye Aerospace of Colorado, aimed at flight schools. It has a 125 kW (167 hp) electric motor and a battery of about 90 kWh, with side-by-side seating and Garmin G500 TXi avionics, and is being certified under 14 CFR Part 23, Amendment 64.\"}},{\"@type\":\"Question\",\"name\":\"When did the eFlyer 2 first fly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Serial number 001, the aircraft that opens the certification flight test programme, flew on 17 September 2026 from Centennial Airport near Denver, lifting off at 9:45 am Mountain Time and touching down at 9:51 after about six minutes in the air. Bye Aerospace announced the flight on 24 September 2026. 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Most general aviation airfields also have no charging provision, which limits where an electric fleet can realistically operate.\"}}]}<\/script><div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px\"><p style=\"margin:0 0 8px;font-weight:600;color:#333\">Related Posts<\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/heart-aerospace-es-36-jsx-order-hybrid-electric-2026\/\">Heart ES-36: JSX Backs a 36-Seat Hybrid-Electric Airliner<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/pilatus-pc-12-pro-garmin-safety-autoland-certified-2026\/\">Pilatus PC-12 PRO: The Single-Engine Turboprop That Lands Itself<\/a><\/p><\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>Bye Aerospace has flown eFlyer 2 serial number 001 from Centennial Airport, opening its certification flight test programme. A proof-of-concept aircraft first flew in 2018, and that gap is the real story.<\/p>","protected":false},"author":27,"featured_media":25571638,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[665,670],"tags":[],"class_list":["post-24614503","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation-world","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>eFlyer 2 First Flight: Bye Aerospace Starts Tests | MiGFlug<\/title>\n<meta name=\"description\" content=\"Bye Aerospace has flown the eFlyer 2 electric trainer at Centennial Airport near Denver, opening its FAA certification flight test programme.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/migflug.com\/afterburner\/fr\/bye-aerospace-eflyer-2-first-flight-centennial-airport-2026\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"eFlyer 2 First Flight: Bye Aerospace Starts Tests | MiGFlug\" \/>\n<meta property=\"og:description\" content=\"Bye Aerospace has flown the eFlyer 2 electric trainer at Centennial Airport near Denver, opening its FAA certification flight test programme.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/migflug.com\/afterburner\/fr\/bye-aerospace-eflyer-2-first-flight-centennial-airport-2026\/\" \/>\n<meta property=\"og:site_name\" content=\"Afterburner - 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