{"id":31823712,"date":"2026-11-08T16:14:14","date_gmt":"2026-11-08T15:14:14","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/part-103-evtol-254-pound-empty-weight-battery-rule\/"},"modified":"2026-11-08T16:14:39","modified_gmt":"2026-11-08T15:14:39","slug":"part-103-evtol-254-pound-empty-weight-battery-rule","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/part-103-evtol-254-pound-empty-weight-battery-rule\/","title":{"rendered":"Part 103 eVTOL: The 254-Pound Limit Includes Your Batteries"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\r\n\r\n<!-- mfsh:top -->PLACEHOLDER_REPLACE_WITH_VERBATIM_FROM_POST_19385236<!-- \/mfsh:top -->\r\n\r\n<p>Pivotal sells a single-seat electric aircraft whose web page carries six words that do a great deal of work: &ldquo;No pilot&rsquo;s license required.&rdquo; Jetson sells a one-person electric quadcopter and says much the same thing &mdash; no pilot&rsquo;s licence required in the United States. Both statements are, as far as anything here suggests, true.<\/p><p>The reason they are true is a four-page federal regulation written in 1982, when the aircraft it had in mind was a lawn chair under a Dacron wing with a two-stroke behind the pilot&rsquo;s head. Nothing in it mentions batteries. Nothing in it mentions electric motors. Nothing in it anticipates a carbon-fibre octocopter costing more than a house.<\/p><p>Which raises the obvious question, and it is the question the entire personal-eVTOL market rests on. The rule limits a powered ultralight to five gallons of fuel. An electric aircraft carries no fuel at all. Is that a loophole?<\/p><p>No. The FAA closed it in 2012, in a letter almost nobody in the current wave of coverage has read.<\/p>\r\n\r\n\r\n<div style=\"background:#f4f6f8;border-left:4px solid #5C91FF;padding:16px 20px;margin:24px 0\"><p style=\"margin:0 0 8px;font-weight:600;color:#333\">Quick Facts<\/p><p style=\"margin:4px 0\"><strong>The rule:<\/strong> 14 CFR Part 103, unchanged in substance since 1982 (amended 1991 and 2001)<\/p><p style=\"margin:4px 0\"><strong>Powered ultralight empty weight:<\/strong> Less than 254 lb, excluding floats and emergency-deployment safety devices<\/p><p style=\"margin:4px 0\"><strong>The other three numbers:<\/strong> Fuel capacity not over 5 US gallons; not capable of more than 55 kt CAS level at full power; power-off stall not over 24 kt CAS<\/p><p style=\"margin:4px 0\"><strong>Occupants:<\/strong> One. &sect;&nbsp;103.1(a), and &sect;&nbsp;103.1(b) adds &ldquo;recreation or sport purposes only&rdquo;<\/p><p style=\"margin:4px 0\"><strong>Do batteries count toward empty weight?:<\/strong> Yes. FAA Office of the Chief Counsel legal interpretation, 4 September 2012<\/p><p style=\"margin:4px 0\"><strong>Altitude limit in Part 103:<\/strong> There is none. Not one section states a ceiling<\/p><p style=\"margin:4px 0\"><strong>Jetson ONE published figures:<\/strong> Empty mass 55 kg \/ 121 lb; mass including batteries 115 kg \/ 253 lb<\/p><p style=\"margin:4px 0\"><strong>Pivotal Helix published empty weight:<\/strong> None published. Max gross takeoff 568 lb, payload 220 lb<\/p><\/div>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">Four Numbers, and They Are Shorter Than the Marketing<\/h2>\r\n<p>Part 103 defines an ultralight vehicle in a single section, and the whole of the powered definition fits in a paragraph. The vehicle must be used for manned operation in the air by a single occupant, for recreation or sport purposes only, and must hold no airworthiness certificate. If powered, it must weigh less than 254 pounds empty weight, excluding floats and safety devices intended for deployment in a potentially catastrophic situation; have a fuel capacity not exceeding five US gallons; not be capable of more than 55 knots calibrated airspeed at full power in level flight; and have a power-off stall speed not exceeding 24 knots calibrated airspeed.<\/p>\r\n<p>That is it. Meet those and &sect;&nbsp;103.7 does something remarkable: it switches off certification. Ultralight vehicles are not required to meet airworthiness standards or hold certificates of airworthiness. Operators are not required to meet any aeronautical knowledge, age, or experience requirements, or to hold airman or medical certificates. The vehicles are not required to be registered or to bear markings of any type.<\/p>\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\/11\/huntair-pathfinder-classic-part-103-ultralight.jpg\" alt=\"A single-seat tube-and-fabric ultralight aircraft in flight with an open seat\" 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 kind of aircraft Part 103 was written around in 1982: open seat, fabric wing, small two-stroke. This example is UK-registered; the American rule applies only in US airspace. Photo: Adrian Pingstone via Wikimedia Commons<\/figcaption><\/figure>\r\n\r\n<p>No licence. No medical. No registration. No N-number. No inspection. In a country where moving a Cessna between two airfields generates paperwork, this is an extraordinary carve-out, and it has survived untouched for more than forty years. The eCFR records Part 103 as issued under the 1982 docket with amendments in 1991 and 2001 &mdash; and nothing since.<\/p>\r\n<h2 style=\"padding-top:22px\">The Gap That Looks Like a Gift<\/h2>\r\n<p>Now put an electric aircraft into that 1982 text.<\/p>\r\n<p>Three of the four numbers transfer without trouble. Weight is weight. Level-flight speed is level-flight speed. The stall clause we will come back to. But the fuel-capacity limit simply evaporates. &sect;&nbsp;103.1(e)(2) caps fuel capacity at five US gallons, and a battery-powered aircraft has a fuel capacity of zero gallons, which is comfortably under five.<\/p>\r\n<p>The word &ldquo;battery&rdquo; does not appear anywhere in Part 103. Neither does &ldquo;electric&rdquo;. Read the rule literally and an electric ultralight satisfies the fuel limit automatically, no matter how much energy it carries.<\/p>\r\n<p>If batteries were treated the way fuel is treated &mdash; as a consumable, excluded from empty weight &mdash; a designer could hang an arbitrary amount of lithium on an airframe, stay under 254 pounds on paper, and fly it with no licence. That is the loophole, and it is worth about two hundred pounds of battery.<\/p>\r\n<h2 style=\"padding-top:22px\">The 2012 Letter That Closed It<\/h2>\r\n<p>On 4 September 2012 the FAA&rsquo;s Office of the Chief Counsel, Regulations Division, answered a question from Carol and Brian Carpenter of Rainbow Aviation Services, who had written in that May asking about batteries and electric motors in Part 103 ultralights. The interpretation was prepared by Paul Greer, an attorney in the Regulations Division, and coordinated with the flight-standards and aircraft-certification offices.<\/p>\r\n<p>It gives two answers, and the first is generous. An ultralight vehicle may be powered by an electric motor. Unlike light-sport aircraft, which are restricted to a single reciprocating engine, Part 103 imposes no restriction on engine type at all. Electric propulsion was never in question.<\/p>\r\n<p>The second answer is the one that governs the market.<\/p>\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 weight of those batteries must be included when determining the empty weight&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>FAA Office of the Chief Counsel<\/strong> &mdash; Legal interpretation to Rainbow Aviation Services, Regulations Division (AGC-200), 4 September 2012<\/div><\/div><\/div>\r\n\r\n<p>The reasoning is short and hard to argue with. The FAA relies on the definition of empty weight in its own Aircraft Weight and Balance Handbook &mdash; the weight of the airframe, engines, all permanently installed equipment, and unusable fuel &mdash; and observes that batteries remain installed in the vehicle during flight and weigh virtually the same once depleted. They are not consumed. Treating them as fuel, the letter notes, would let a vehicle carry an unlimited quantity of them, which is precisely what the five-gallon limit exists to prevent.<\/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\/BxPeBUBBNEQ\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n<p style=\"font-size:13px;color:#777;text-align:center;font-style:italic\">A walkaround of the Jetson ONE framed explicitly around its Part 103 status.<\/p>\r\n<p>So the arithmetic for every electric ultralight in the world is: airframe, plus motors, plus structure, plus avionics, plus the entire battery pack, all under 254 pounds. The emergency parachute comes out of that total &mdash; &sect;&nbsp;103.1(e)(1) excludes safety devices intended for deployment in a potentially catastrophic situation &mdash; and the FAA&rsquo;s advisory circular on ultralights caps that exclusion at 24 pounds of parachute. There is no corresponding allowance for a battery.<\/p>\r\n<h2 style=\"padding-top:22px\">What the Manufacturers Actually Publish<\/h2>\r\n<p>Here is where it gets interesting, because the two best-known machines publish very different things.<\/p>\r\n<p><strong>Jetson<\/strong> publishes both numbers. Its specification page gives the Jetson ONE an empty mass of 55 kg, or 121 lb, and a mass including batteries of 115 kg, or 253 lb. Under the 2012 interpretation the second figure is the one Part 103 cares about, and 253 is one pound under 254.<\/p>\r\n<p>One pound. Whether that margin is deliberate engineering or coincidence, it is the tightest published tolerance in personal aviation, and it tells you exactly how binding the limit is. It is also worth noting that Jetson&rsquo;s own homepage quotes an all-up weight of 86 kg, which does not agree with the 115 kg on its specification page; we have not been able to reconcile the two.<\/p>\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\/11\/pivotal-helix-part-103-evtol-hover.jpg\" alt=\"Two Pivotal single-seat electric aircraft flying low over open farmland\" 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\">Pivotal aircraft over open country. Section 103.15 bars operation over any congested area, which is the terrain Part 103 actually contemplates. Image: Pivotal<\/figcaption><\/figure>\r\n\r\n<p><strong>Pivotal<\/strong> publishes neither. Its Helix page gives a maximum gross takeoff weight of 568 lb and a payload of 220 lb, a cruise speed of 55 knots, 20 minutes of endurance and a 20-mile range. It does not publish an empty weight. The Vertical Flight Society&rsquo;s directory lists 348 lb, which is simply 568 minus 220, but that is a third-party arithmetic inference and not a manufacturer figure.<\/p>\r\n<p>And here is the detail that rewards reading the page rather than the coverage of the page: the words &ldquo;Part 103&rdquo; and &ldquo;ultralight&rdquo; do not appear on Pivotal&rsquo;s own site at all. What appears is the claim about licensing. The regulatory classification that everyone else attaches to the aircraft is attached by everyone else.<\/p>\r\n<p>We are not suggesting any aircraft is non-compliant. We are pointing out that the single number which decides compliance is published by one manufacturer and not the other, and that anyone spending six figures should ask for it in writing.<\/p>\r\n<h2 style=\"padding-top:22px\">The November 2026 Flare-Up<\/h2>\r\n<p>The question stopped being academic in the first week of November 2026, when the drone-industry outlet DroneXL reported that the YouTube reviewer behind Jimmy&rsquo;s World had been told by the FAA that an imported eight-rotor personal eVTOL he had been examining did not qualify under Part 103 &mdash; batteries included.<\/p>\r\n<p>Precision matters here, so: that account is the reviewer&rsquo;s, not a published FAA determination, and DroneXL says as much. No FAA document naming that aircraft has been produced. What DroneXL did do is connect the battery point he described to the 2012 interpretation, which says exactly that and has said it for fourteen years.<\/p>\r\n<p>The wider lesson is not about one importer. It is that a rule which switches off certification entirely also switches off the mechanism that would have told a buyer the answer. Nobody inspects an ultralight. Nobody issues it a certificate. If the empty weight is wrong, there is no process that discovers this before the FAA knocks.<\/p>\r\n<h2 style=\"padding-top:22px\">The Three Limits That Did Not Evaporate<\/h2>\r\n<p>Weight is the famous constraint. It is not the only one.<\/p>\r\n<p><strong>55 knots.<\/strong> The vehicle must not be <em>capable<\/em> of more than 55 knots calibrated airspeed at full power in level flight &mdash; capability, not operating practice. Jetson publishes a top speed software-limited to 102 km\/h, which is 55 knots. Pivotal publishes a 55-knot cruise. Both sit precisely on the line, which is not a coincidence.<\/p>\r\n<p><strong>One occupant.<\/strong> &sect;&nbsp;103.1(a) permits a single occupant, and no part of Part 103 contemplates a passenger. There is no instructional exception written into the rule; &sect;&nbsp;103.5 allows deviations only under a written waiver from the Administrator.<\/p>\r\n<p><strong>Recreation or sport purposes only.<\/strong> &sect;&nbsp;103.1(b) is a use restriction, not merely a design one. Whatever an electric multicopter is good for, commuting to work in it is not obviously recreation or sport.<\/p>\r\n<p>Then there is the fourth number, and it is the one the 1982 draftsmen could not have seen coming. &sect;&nbsp;103.1(e)(4) requires a power-off stall speed not exceeding 24 knots calibrated airspeed. A multirotor has no wing and therefore no stall speed; with the power off it does not stall, it descends. Part 103 contains no language addressing an aircraft without a wing, and the 2012 interpretation addressed propulsion rather than stall. The rule assumes a wing because in 1982 everything it governed had one.<\/p>\r\n<h2 style=\"padding-top:22px\">The Operating Rules Are Where the Dream Actually Dies<\/h2>\r\n<p>Buyers tend to read &sect;&nbsp;103.1 and stop. Subpart B is where the aircraft meets the country it has to fly over.<\/p>\r\n<p>&sect;&nbsp;103.15 prohibits operation over any congested area of a city, town, or settlement, or over any open air assembly of persons. That single sentence removes essentially every use case the promotional video implies.<\/p>\r\n<p>&sect;&nbsp;103.17 bars Class A, B, C and D airspace, and the surface area of Class E designated for an airport, without prior authorisation from the controlling ATC facility. &sect;&nbsp;103.21 requires operation by visual reference with the surface &mdash; no cloud, no instrument flying, ever. &sect;&nbsp;103.11 restricts flight to between sunrise and sunset, with a narrow twilight allowance that requires an anticollision light visible for three statute miles and operations in uncontrolled airspace only. &sect;&nbsp;103.13 requires the pilot to see and avoid, and to yield the right of way to all aircraft.<\/p>\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\/11\/pivotal-helix-single-seat-electric-aircraft.jpg\" alt=\"A Pivotal single-seat electric aircraft parked on a lawn beside a house\" 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\">A Pivotal aircraft on a residential lawn. Part 103 governs where an ultralight may be flown, not where it may be parked. Image: Pivotal<\/figcaption><\/figure>\r\n\r\n<p>What survives all that is flying in daylight, in good visibility, alone, for fun, in Class G airspace, away from anywhere anyone lives. Which is, precisely and intentionally, what Part 103 was written to permit.<\/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\/iW4LVpHiZJA\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n<p style=\"font-size:13px;color:#777;text-align:center;font-style:italic\">The Pivotal Helix, the other machine sold in the United States on the strength of this regulation.<\/p>\r\n<p>One thing the rule conspicuously does not do is set a ceiling. Part 103 contains no altitude limit in any section; the altitude figures in &sect;&nbsp;103.23 are visibility and cloud-clearance bands, not a cap. We have written about that oddity at length separately.<\/p>\r\n<h2 style=\"padding-top:22px\">What &ldquo;No Licence Required&rdquo; Is Not<\/h2>\r\n<p>It is not a statement that the aircraft is safe, and it is not a statement that anyone has checked. &sect;&nbsp;103.7 waives the airworthiness standards; it does not substitute anything for them. The aircraft you buy has been evaluated by the company that built it, and by nobody else.<\/p>\r\n<p>Nor does it mean no training. Pivotal is explicit about this, and the detail is a useful corrective to the headline.<\/p>\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #d32f2f;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;Because Helix requires successful completion of Pivotal flight training to be eligible to fly, we don&rsquo;t offer test flights.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Pivotal<\/strong> &mdash; Support FAQ, pivotal.aero, read 7 November 2026<\/div><\/div><\/div>\r\n\r\n<p>Jetson takes a different line, telling buyers its control system makes anyone a pilot in under five minutes. Two companies, the same regulation, opposite messages about what the customer needs to learn &mdash; which is itself an argument that the regulation is not doing the work people assume it is.<\/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\/FzhREYOK0oo\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n<p style=\"font-size:13px;color:#777;text-align:center;font-style:italic\">Jetson&rsquo;s own launch film. Watch what it promises, then read &sect;&nbsp;103.15 again.<\/p>\r\n<p>Part 103 is not a certification standard that electric aircraft have passed. It is a decision, taken in 1982, that a certain class of very small, very slow, single-seat machine was not worth regulating, because the only person a pilot could plausibly hurt was the pilot. Everything the modern personal-eVTOL industry sells in the United States depends on fitting inside that judgement &mdash; four numbers, one of which now has to carry the batteries too.<\/p>\r\n\r\n<p><em>Sources: 14 CFR Part 103 via the eCFR and the govinfo CFR XML; FAA Office of the Chief Counsel legal interpretation of 4 September 2012; FAA Advisory Circular 103-7; FAA Aircraft Weight and Balance Handbook FAA-H-8083-1A; manufacturer specification pages published by Jetson and Pivotal; the Vertical Flight Society eVTOL directory; DroneXL.<\/em><\/p>\r\n\r\n<!-- mfsh:bottom -->PLACEHOLDER_REPLACE_WITH_VERBATIM_FROM_POST_19385236<!-- \/mfsh:bottom -->\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>Do batteries count toward the Part 103 254-pound empty weight limit?<\/summary><div class=\"a\">Yes. An FAA Office of the Chief Counsel legal interpretation dated 4 September 2012, issued to Rainbow Aviation Services, concluded that the weight of the batteries must be included when determining the empty weight of an ultralight vehicle. Batteries stay installed and weigh the same when depleted, so they are not treated as fuel.<\/div><\/details><details><summary>Can a Part 103 ultralight be electric?<\/summary><div class=\"a\">Yes. The same 2012 FAA interpretation states that an ultralight vehicle may be powered by an electric motor. Unlike light-sport aircraft, which are limited to a single reciprocating engine, Part 103 places no restriction on engine type. The constraint on electric ultralights is weight, not propulsion.<\/div><\/details><details><summary>What are the four Part 103 limits for a powered ultralight?<\/summary><div class=\"a\">Less than 254 pounds empty weight, excluding floats and emergency-deployment safety devices; fuel capacity not exceeding five US gallons; not capable of more than 55 knots calibrated airspeed at full power in level flight; and a power-off stall speed not exceeding 24 knots calibrated airspeed. It must also carry a single occupant.<\/div><\/details><details><summary>Does the Jetson ONE comply with Part 103?<\/summary><div class=\"a\">Jetson publishes an empty mass of 55 kg, or 121 lb, and a mass including batteries of 115 kg, or 253 lb. Under the 2012 interpretation the figure that matters is the one including batteries, which is one pound under the 254-pound limit. Jetson's homepage separately quotes 86 kg, which does not match its specification page.<\/div><\/details><details><summary>What is the empty weight of the Pivotal Helix?<\/summary><div class=\"a\">Pivotal does not publish one. Its Helix page gives a maximum gross takeoff weight of 568 pounds and a payload of 220 pounds. The Vertical Flight Society directory lists 348 pounds, which is the difference between those two figures rather than a manufacturer-published number.<\/div><\/details><details><summary>Can you fly a Part 103 eVTOL over a city?<\/summary><div class=\"a\">No. Section 103.15 prohibits operating an ultralight vehicle over any congested area of a city, town, or settlement, or over any open air assembly of persons. Section 103.17 also bars Class A, B, C and D airspace without prior authorisation from the controlling air traffic control facility.<\/div><\/details><details><summary>Is there an altitude limit for Part 103 ultralights?<\/summary><div class=\"a\">No section of Part 103 states an altitude ceiling. The altitude figures that appear in section 103.23 set flight visibility and cloud-clearance minimums by airspace band; they are not a cap on how high the vehicle may fly. Airspace restrictions under section 103.17 are what limit altitude in practice.<\/div><\/details><details><summary>Did the MOSAIC rule change Part 103?<\/summary><div class=\"a\">Part 103's four defining numbers are unchanged. The eCFR records the part as issued under the 1982 docket with amendments noted in 1991 and 2001, and no later amendment appears against the current text. The 254-pound, five-gallon, 55-knot and 24-knot limits all still read as they did.<\/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\":\"Do batteries count toward the Part 103 254-pound empty weight limit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. An FAA Office of the Chief Counsel legal interpretation dated 4 September 2012, issued to Rainbow Aviation Services, concluded that the weight of the batteries must be included when determining the empty weight of an ultralight vehicle. Batteries stay installed and weigh the same when depleted, so they are not treated as fuel.\"}},{\"@type\":\"Question\",\"name\":\"Can a Part 103 ultralight be electric?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The same 2012 FAA interpretation states that an ultralight vehicle may be powered by an electric motor. 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Under the 2012 interpretation the figure that matters is the one including batteries, which is one pound under the 254-pound limit. Jetson's homepage separately quotes 86 kg, which does not match its specification page.\"}},{\"@type\":\"Question\",\"name\":\"What is the empty weight of the Pivotal Helix?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Pivotal does not publish one. Its Helix page gives a maximum gross takeoff weight of 568 pounds and a payload of 220 pounds. The Vertical Flight Society directory lists 348 pounds, which is the difference between those two figures rather than a manufacturer-published number.\"}},{\"@type\":\"Question\",\"name\":\"Can you fly a Part 103 eVTOL over a city?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Section 103.15 prohibits operating an ultralight vehicle over any congested area of a city, town, or settlement, or over any open air assembly of persons. Section 103.17 also bars Class A, B, C and D airspace without prior authorisation from the controlling air traffic control facility.\"}},{\"@type\":\"Question\",\"name\":\"Is there an altitude limit for Part 103 ultralights?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No section of Part 103 states an altitude ceiling. The altitude figures that appear in section 103.23 set flight visibility and cloud-clearance minimums by airspace band; they are not a cap on how high the vehicle may fly. Airspace restrictions under section 103.17 are what limit altitude in practice.\"}},{\"@type\":\"Question\",\"name\":\"Did the MOSAIC rule change Part 103?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Part 103's four defining numbers are unchanged. The eCFR records the part as issued under the 1982 docket with amendments noted in 1991 and 2001, and no later amendment appears against the current text. The 254-pound, five-gallon, 55-knot and 24-knot limits all still read as they did.\"}}]}<\/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\/far-part-103-ultralight-fly-without-pilot-license\/\">FAR Part 103: The Aircraft You Can Legally Fly With No Licence<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/part-103-altitude-limit-ultralight-airspace-no-ceiling\/\">How High Can You Fly Without a Licence, and Why Part 103 Never Says<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/sport-pilot-certificate-after-mosaic-privileges-hours-vs-private\/\">Sport Pilot After MOSAIC: Privileges, Hours and How It Compares<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/evtol-air-taxis-faa-certification-us-launch-summer-2026\/\">eVTOL Air Taxis: The FAA Certification Path and the US Launch<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/cheapest-aircraft-to-own-operating-cost-ultralight-20-100-hours\/\">Cheapest Aircraft to Own: The Real Cost at 20 and 100 Hours a Year<\/a><\/p><\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>Jetson and Pivotal sell electric aircraft you can fly with no licence. The rule that allows it was written in 1982 and never mentions batteries. In 2012 the FAA decided they count anyway.<\/p>\n","protected":false},"author":27,"featured_media":31822443,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[665],"tags":[],"class_list":["post-31823712","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation-world"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Part 103 eVTOL: The 254-Pound Battery Rule | MiGFlug<\/title>\n<meta name=\"description\" content=\"A Part 103 eVTOL needs no pilot licence, but the FAA counts battery weight in the 254-pound limit. 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