Electric aircraft: what do you actually certify?

The world's largest electric aircraft, according to its manufacturer Heart Aerospace, flew on 12 August 2026 in Plattsburgh, New York State. What do you certify when propulsion changes? The regulatory foundation stays, supplemented by special conditions for electric propulsion and its batteries.

In other words: certification is not reinvented, it is extended. For a European operator or CAMO, the stakes are not the aircraft itself. It will not carry passengers before 2031 at the earliest. The stakes are the documentary framework being built around it right now. This article breaks that framework down, with primary sources throughout.

The fact: 27 minutes above Plattsburgh

On 13 August 2026, Heart Aerospace announced the first flight of its X1 demonstrator, performed the day before from its flight-test base at Plattsburgh International Airport. Unless stated otherwise, every figure below comes from that press release.

The aircraft is outsized: a 106-foot wingspan, 76 feet nose to tail, more than 25,000 pounds at takeoff. Heart presents it as the largest battery-electric aircraft ever flown. The piloted mission lasted 27 minutes at 1,100 feet AGL. The electric propulsion system delivered more than one megawatt. The profile included taxi, takeoff, climb, maneuvering and landing. The flight was conducted under an FAA Special Airworthiness Certificate in the Experimental Category (SAC-EC). According to Heart, the aircraft used about five dollars' worth of electricity.

The X1 is the full-scale demonstrator of the manufacturer's production aircraft, the ES-30. The ES-30 is a 30-seat hybrid-electric regional airliner: 200 km of all-electric range, 800 km in hybrid operation, with a claimed 30-minute recharge. It is being developed for FAA Part 25 certification, the transport-category standard. Heart claims 9.4 billion dollars in customer commitments, notably from United Airlines, Air Canada and JSX. Type certification is announced for 2031, with flight testing of the pre-production aircraft from 2028 at the Los Angeles plant.

The choice of airfield is no accident. Plattsburgh is a regional airport serving a community of 20,000 people, the release points out. That is exactly the ES-30's target niche: linking modest catchment areas to major hubs. In Europe, that niche matches short routes between secondary cities, often squeezed by the cost of aging turboprops. Heart's argument — cheaper, less volatile energy — speaks directly to that market. It still has to be proven in service, with passengers, rotations and real maintenance.

Customer airlines are named in the release. John Di Bert, Executive Vice President and Chief Financial Officer of Air Canada, says Air Canada's investment in Heart reflects the airline's commitment to innovative technologies. Founder and CEO Anders Forslund claims to have "demonstrated electric flight at the scale of a commercial airliner".

Outside the release, the public reception asks the underlying question. Under the announcement, one reader on the r/aviation forum wonders: "Why make this demonstrator all-electric when the planned production aircraft will have two turboprops?" A reception signal, not evidence — but it is the right question, and the rest of this article answers it section by section, between the all-electric X1 and the hybrid ES-30.

Heart also makes an economic case: more than 40% lower operating costs than current regional aircraft. The release supports it with fuel price context. Jet fuel is cited at 3.50 dollars per gallon for the week ending 7 August, up 63% year over year. These figures come from the manufacturer and cannot be independently verified at this stage.

One detail deserves a practitioner's attention. Chief Technology Officer Ben Stabler sums up the X1 program as the capability to "design, build, test, operate, and continuously improve" a clean-sheet electric aircraft. That sentence describes less a flight than a design and flight-test organization. And that organization is precisely what an authority will audit during ES-30 certification. The 12 August flight is therefore also a demonstration of industrial maturity.

From the first electric certificate to the X1's first flight: the grey dates remain Heart Aerospace targets.

What certifying an electric aircraft means

Let us clear up a misunderstanding first: the 12 August flight certifies nothing. A special airworthiness certificate in the experimental category authorizes testing, not commercial operation. The real question is therefore: which framework will certify the ES-30, and what do we already know about it?

The foundation does not change. The ES-30 targets FAA Part 25, the same standard as jet transport aircraft. In Europe, the equivalent is EASA's CS-25. These codes apply to an electric aircraft like any other. But their existing standards were not considered adequate for its novel features: propulsion batteries, electric motors, high-voltage systems. That finding motivates special conditions that supplement the certification basis, not replace it.

The adaptation mechanism is known: special conditions. At the FAA, 14 CFR 21.16 governs this case. When the regulations contain no adequate standards for a novel feature, the agency issues special conditions that supplement the certification basis. The mechanism is not theoretical. On 27 September 2021, the FAA published special conditions for the magniX magni350 and magni650 electric engines (86 FR 53508), the first of their kind for electric propulsion. On 18 March 2026, it published the final special conditions for the ZeroAvia ZA601 electric engine (91 FR 12917). In Europe, point 21.A.16B of Regulation (EU) No 748/2012 grounds the same mechanism.

EASA already has its dedicated special condition: SC E-19. Published in final form in 2021, Special Condition SC E-19 on electric and hybrid propulsion systems covers the CS-23, CS-25, CS-27 and CS-29 codes. Its tracking page details the progress of means of compliance. The "Endurance and Durability Demonstration" and "Calibration Assurance" MOCs are published in final form. "Safety Assessment" and "Overspeed and Containment Demonstration" have closed their consultation, with no final publication to date. For eVTOL aircraft, EASA applies another special condition, SC-VTOL, supplemented by its own means of compliance.

The European precedent exists. On 10 June 2020, EASA issued the Pipistrel Velis Electro the world's first type certification of an all-electric aircraft. A two-seat trainer, far from a 30-seat regional — but proof that the mechanism delivers.

For Europe, the path would run through validation. The ES-30 is being developed under FAA certification. To be registered and operated in Europe, its type design would need EASA validation. That validation plays out between the applicant — the type-certificate holder — and both authorities, under the BASA bilateral agreement and its Technical Implementation Procedures (TIP). It would review the FAA special conditions against the European SC E-19. The European operator then relies on an already validated type design. Both agencies are therefore working on the same technical object, with near-identical mechanisms. The bilateral framework provides several avenues, from acceptance of findings to graduated technical involvement by the validating authority. EASA retains its decision-making authority. Depending on the validation avenue retained, certain findings and data produced for the FAA could therefore be accepted or reused without a full rebuild.

An electric certification basis is stacked, not rewritten.

What electric propulsion changes for airworthiness records

This is where the topic meets a CAMO's daily work. Type certification defines the reference configuration; continuing airworthiness will demonstrate, aircraft by aircraft, that this configuration is maintained. Electric propulsion shifts the content of that demonstration. What follows is a practitioner's anticipation, not the transcription of obligations already written into regulation.

The battery would become a life-tracked critical component. On a turbofan, life-limited parts (LLP) concentrate traceability: cycle counting, back-to-birth history, removal at limit. A propulsion battery would raise the same kind of requirement, with different parameters: state of health, charge-cycle counts, temperature history, thermal events. The continuing-airworthiness rules of Regulation (EU) No 1321/2014 have no dedicated propulsion-battery section yet. The format would be set by the instructions for continued airworthiness (ICA) of the approved type design. But the logic of special conditions and endurance MOCs shows the direction of travel: battery health would become a verifiable item in an airworthiness review.

Software would enter the certified configuration. The battery management system (BMS) drives propulsion safety. Its versions, updates and their approvals would become configuration data, just like an applied service bulletin on an airframe of the approved type design. An airworthiness file that did not track propulsion software versions would be an incomplete file.

High voltage would create new program items. Staff qualifications, lock-out procedures, connector and insulation checks. The maintenance program approved under point M.A.302 would have to embed these tasks from fleet entry. Airworthiness review staff would have to be able to verify them; the ARC would only be the certificate that results.

Battery history could weigh on aircraft value. A pack with a complete state of health and charging history would reassure buyers and lessors. A pack without traceability would behave like a part without records: price discount, escrow hold, even a blocked deal. We already documented this mechanism on the pre-owned market and the value of records. Electric propulsion would extend it to a new and costly component.

The grid below translates each technology brick into a documentary requirement. It is a practitioner's anticipation, not a written regulatory obligation — the limits section comes back to this.

What a European operator or CAMO must anticipate by 2030

No electric or hybrid regional aircraft will be in European commercial service tomorrow. But the decisions that make a fleet entry smooth are taken five years before delivery. The following checklist is calibrated for a 2030 horizon.

1. Map future certification bases. For each electric or hybrid type under consideration, identify the foundation (Part 25, CS-23, SC-VTOL) and the associated special conditions. The certification basis, not the press release, determines future documentary requirements.
2. Demand the continuing-airworthiness data plan at letter-of-intent stage. The manufacturer's instructions for continued airworthiness (ICA) must specify the battery data format: who produces it, in which format, at which frequency.
3. Prepare the record-keeping system. The CAMO tool must accept new fields: state of health per pack, cycles, charging history, software versions. Adapting a system under delivery pressure is the worst scenario.
4. Anticipate high-voltage qualifications. Part-145 maintenance staff will need new qualifications; training them takes years, not months.
5. Contractualize access to BMS data. Ownership and access to propulsion data are negotiated with the manufacturer and the lessor, just like engine data today.
6. Track the SC E-19 MOCs still open. "Safety Assessment" and "Overspeed and Containment Demonstration" will become the compliance reference; their final publication will shift authority expectations.
7. Write electric items into the maintenance program from fleet entry. The M.A.302 program must cover high voltage, batteries and software from day one, not after the first audit finding.

Bounded case: inducting a hybrid regional in Europe

Take a deliberately narrow case. A European regional operator — call it Operator R — signs a firm order in 2028 for a 30-seat hybrid-electric aircraft certified under FAA Part 25, delivery targeted for 2031. Operating under a European registry will require an EASA validation of the American type certificate, and therefore the European declination of the special conditions, most likely via SC E-19. What does its CAMO do between signature and delivery?

At signature, in 2028. The CAMO obtains the list of applicable special conditions and the ICA plan from the manufacturer. It negotiates BMS data access in the contract, before leverage shifts at delivery. It enters the aircraft in the scope of work of its exposition, mentioning the electric-propulsion specifics.

One year before delivery. The M.A.302 maintenance program is built with battery, high-voltage and software items. The record-keeping system is configured to receive each pack's state of health. High-voltage staff qualifications are launched. The initial documentary review verifies that the certification basis, special conditions included, is documented in the aircraft's records.

At the first airworthiness review. Review staff check the classic records: AD and SB status, work orders. They also check the new records: battery state of health, cycle counts, BMS update log. The review report required by point M.A.903(h) records them like any other finding, within the framework reshaped by Regulation (EU) 2026/100 on the airworthiness review.

The moral of the case: none of these actions requires waiting for a new regulation. All rely on the existing continuing-airworthiness machinery, applied to new objects.

Limits: what this first flight does not say

Journalistic discipline requires bounding what the sources actually establish.

• The X1 is an experimental demonstrator. Its 12 August 2026 flight is no formal certification step for the ES-30. Heart itself presents it as a tool to validate technologies, aerodynamics and organization.
• The ES-30 is a hybrid, not an all-electric aircraft. The X1 demonstrates battery-electric propulsion at airliner scale. The ES-30's full hybrid architecture, with its backup combustion engine, has not flown yet.
• Dates are manufacturer targets. Pre-production flight testing in 2028, certification and entry into service in 2031: these are objectives announced on 13 August 2026, not regulatory commitments. Programs of this kind historically slip.
• Economic figures are manufacturer claims. More than 40% cost reduction, 9.4 billion dollars in commitments, five dollars of electricity, jet fuel up 63%: none is audited or independently verifiable to date.
• The special-conditions framework is proven but unfinished. Several SC E-19 MOCs still lack final publication. The exact content of future requirements for a 30-seat hybrid regional is therefore not fixed.
• No battery-specific continuing-airworthiness requirement exists yet in Part-M or Part-CAMO. The "technology → records" grid in this article is an anticipation grounded in the logic of special conditions, not the transcription of an obligation.

Kepler's take: the battery is the new LLP file

Kepler's take: our practitioners' conviction is that electric propulsion will not change maintenance first. It will change records first. For thirty years, an aircraft's probative value rested on the traceability of its engines' life-limited parts. Tomorrow it will rest on the traceability of its batteries' health. A pack without a complete charging history will be what a turbine disc without back-to-birth is today. An unsellable component, and an undemonstrable airworthiness. Organizations that prepare their record-keeping systems before deliveries will turn an anticipated documentary constraint into an operational advantage; the others will reconstruct histories under pressure.

Kepler Aviation builds traceability and document-automation tools for maintenance and continuing-airworthiness management, within the Kepler Digitals ecosystem. To prepare the arrival of electric propulsion in your records, contact us.

Sources

• Heart Aerospace completes first flight of world's largest electric aircraft, Heart Aerospace press release, 13 August 2026. The economic figures quoted in this article (more than 40% operating-cost reduction, 9.4 billion dollars in customer commitments, five dollars of electricity) are figures communicated by Heart Aerospace, unaudited.
• ES-30, Heart Aerospace product page — manufacturer-stated specifications.
• Special Condition SC E-19 — Electric/Hybrid Propulsion System, EASA.
• Special Condition SC-VTOL, EASA.
• EASA certifies electric aircraft — first type certification of a fully electric aircraft (Velis Electro), EASA, 10 June 2020.
• Special Conditions: magniX USA Inc. magni350 and magni650 model engines, Federal Register, 27 September 2021 (86 FR 53508).
• Special Conditions: ZeroAvia Inc. model ZA601 electric engines, Federal Register, 18 March 2026 (91 FR 12917).
• 14 CFR 21.16 — Special conditions, eCFR.
• Regulation (EU) No 748/2012, EUR-Lex.
• Regulation (EU) No 1321/2014, EUR-Lex.
• Commission Implementing Regulation (EU) 2026/100, EUR-Lex.
• r/aviation discussion of the X1 first flight, August 2026: a reader's question about the all-electric demonstrator choice — public reception signal, not a technical source.