With Europe's wildfire seasons setting consecutive records — and the continent's aging fleet of water bombers stretched to its limit — a French aerospace startup has started converting a retired regional airliner into a firefighting aircraft using an approach that could cut the time to market from a decade to three years. On September 1, 2026, Kepplair Evolution formally began the structural modification of an ATR 72-200 turboprop at Toulouse-Blagnac Airport, marking the first concrete fabrication step in its KE-72 "Forest Keeper" program.

The conversion — not a new-build — is the company's core engineering bet. By working from a type-certificated airframe that already has a mature supply chain, certified engines, and known airworthiness characteristics, Kepplair argues it can deliver a new water bomber ahead of purpose-built alternatives, at roughly half the acquisition cost.

Why Europe Needs Water Bombers Right Now

The structural problem is not subtle. The Canadair CL-415, the scooping amphibian that has been the backbone of European aerial firefighting since the 1990s, stopped being manufactured in 2015. Of the roughly 170 aircraft from the original CL-215/CL-415 family still in service, France's fleet alone averages 27.5 years in age, according to the Avincis "Up in Flames" report published at the Aerial Firefighting Europe Global Conference in Rome in March 2026.

The European Union's response — a commitment of €600 million (approximately $694 million USD) to procure 22 De Havilland Canada DHC-515 aircraft across six member states — has been welcomed but described as insufficient. The first of those aircraft is not now expected to reach its first customer until 2028, a delay from earlier projections, leaving a multi-year window in which the existing fleet must hold.

The urgency behind that window has grown sharper in 2026. France recorded its worst wildfire year in modern history as of late July, with roughly 99,000 hectares (245,000 acres) consumed — more than three times the 14-year average for that point in the season, according to Euronews wildfire tracking. Avincis, the aerial emergency services operator that deploys 47 aircraft in Spain and Portugal alone, reported that crews in those two countries had already logged more than 5,000 firefighting flight hours in the first part of 2026 — more than double the equivalent figure from 2025. Europe's 2025 fire season, which burned 1,079,538 hectares (2,667,000 acres) — an area roughly the size of Cyprus — set an all-time EU record, and 2026 is tracking toward comparable severity.

How Kepplair Is Converting an Airliner Into a Firefighting Plane

Before conversion work could begin, Kepplair needed to establish baseline aerodynamic and systems data. In late August 2026, the prototype — an ATR 72-200 cargo variant provided by aircraft lessor ACIA Aero Capital in mid-August — completed two pre-modification test flights over Toulouse under flight-test director Éric Delesalle, a former ATR chief pilot and test pilot, joined in the cockpit by Axel Valat, a test pilot from Aerotec & Concept. Aerotec & Concept, which Kepplair describes as a European leader in aircraft modifications, is the MRO firm leading the physical rebuild, as confirmed in the Kepplair prototype delivery announcement.

The aircraft will remain grounded through the end of 2026 while its transformation takes shape. The work centers on installing the KEDS — Kepplair Evolution Delivery System — a water-drop system engineered in collaboration with the Toulouse Institute of Fluid Mechanics, including Professor Dominique Legendre, and US-based drop-system specialist Trotter Controls.

Why the ATR 72 Platform Makes Engineering Sense

The choice of the ATR 72 as the base airframe is not arbitrary. The turboprop's high-mounted wing — a design feature that keeps its propellers and engines clear of ground debris, essential on unpaved regional airstrips — also provides the belly clearance needed for a firefighting tank without structural modification to the wing box. This geometric advantage is one reason water-bomber conversion programs have historically preferred high-wing aircraft: the tank sits under the fuselage in airspace that low-wing aircraft cannot easily use without major structural changes, and the engine-propeller combination is elevated well above the fire line.

The ATR 72 is one of the most widely operated regional aircraft in the world, with more than 1,200 units built since 1988 — a Franco-Italian joint venture between Airbus and Leonardo, produced in Toulouse. Its global maintenance and parts supply chain is mature. Aircraft reaching the end of their passenger or cargo service lives enter a secondary market at prices well below new-build, providing the feedstock for an industrialized conversion pipeline.

The KE-72's specific prototype, an ATR 72-200 — one of the earliest production variants, which entered service in the late 1980s — demonstrates that the program can breathe new operational life into airframes that would otherwise be retired. Kepplair claims the approach could halve acquisition costs compared with purpose-built alternatives, cut operating and maintenance expenses by around 30%, and reduce CO₂ emissions by as much as 40%. Those figures are the company's own projections and have not been independently verified, per Kepplair's published program details.

The KE-72 is also designed for ground refueling only, eliminating the highly specialized low-level water approach required by amphibious scoopers like the CL-415. Kepplair says this can reduce required training hours by more than 50% — also a company claim awaiting certification validation.

Does Direct Attack or Indirect Attack? The KEDS System Can Do Both

The KEDS system's most operationally significant feature is one the draft documentation describes but undersells: it offers two distinct drop modes that historically required two different types of aircraft.

The first mode is a high-impact blast release — the kind used in direct attack, when an aircraft hits a fire front with maximum water volume to overwhelm and knock down active flame. The second is a constant peak-flow distribution mode designed for retardant application in indirect attack scenarios, where fire managers lay a chemical line ahead of a fire to deny it fuel before the front arrives. The operational distinction matters: direct attack requires maximum instantaneous output; indirect attack requires precision flow control to lay a coherent, evenly distributed retardant line.

Aerial firefighting doctrine has traditionally separated these two functions into different aircraft categories — scoopers optimized for fast, repeated direct-attack drops, and larger tankers set up for precision retardant delivery. The KE-72's ability to switch modes means a single crew and airframe can adapt to the type of attack a fire manager calls for, rather than committing to one tactical posture. Laboratory validation drops have already been conducted on a full-scale ground test rig, per the Kepplair program press releases.

Trotter Controls, the Haltom City, Texas-based specialist involved in the system design, is the manufacturer of what the aerial firefighting industry has called the "gold standard" in airborne drop control — including the all-electric FRDS GEN III system, FAA-approved and deployed on Air Tractor aircraft and CH-47 heavy helicopters. Its DataVault telemetry system provides GPS-compensated, real-time flow control, enabling precise coverage on uneven terrain.

Who Is Paying for This

Kepplair Evolution has raised €17.5 million (approximately $20.2 million USD) across its first two funding rounds. Of that, €5 million (approximately $5.8 million USD) came from public sources — specifically France's France 2030 industrial investment plan and the European Regional Development Fund (FEDER), channeled through the Occitanie region, as detailed in the Kepplair funding announcement. A third funding round is now under way, targeting the certification and industrialization phases.

The program has also attracted institutional endorsement and commercial interest. France's Directorate-General for Civil Security and Crisis Management (DGSCGC), the government body responsible for coordinating national aerial firefighting assets, has submitted a letter of interest. Corsica Technics, an MRO provider based in Bastia, signed a letter of intent in July 2026 to acquire 10 modification kits, aiming to establish a Mediterranean-region conversion hub. French airline Amelia has signed an LOI for two converted aircraft targeted for deployment in Réunion. As of August 2026, Kepplair holds commitments for 18 aircraft or conversion kits with a maximum total value of €400 million (approximately $462 million USD).

Kepplair is targeting a Supplemental Type Certificate (STC) from the European Union Aviation Safety Agency (EASA), with first deliveries planned for 2027. The company has indicated it will subsequently seek FAA certification to address the North American market.

Does the Market Justify This?

By most measures, yes. The global aerial firefighting aircraft market was valued at approximately $1.3 billion in 2025 and is projected to reach $2.2 billion by 2035, growing at a compound annual growth rate of around 5.3%, per Global Market Insights. Retrofit and conversion programs for turboprop platforms are specifically identified in that report as a key growth driver. The shortage of new production capacity for specialized aircraft — the production gap that stopped CL-415 manufacturing in 2015 and left the DHC-515 in limbo until demand from Europe restarted it — is the structural problem conversion programs like the KE-72 are designed to exploit.

When not deployed in firefighting mode, the KE-72 can be reconfigured for cargo transport or medical evacuation, allowing operators to generate revenue and maintain crew proficiency throughout the year rather than sitting on a seasonal asset. Kepplair projects multi-role activity could account for up to 25% of an operator's annual flight cycles — also a company projection without independent validation.

How Does the Certification Path Look?

With conversion underway, the program's critical path runs through in-flight drop tests scheduled to begin in January 2027. Those trials, conducted under EASA oversight, will assess the KEDS system's accuracy, flow characteristics, and structural loads in real flight conditions — validating the laboratory data gathered on the ground rig. EASA STC applications for large airplanes can take up to five years under the agency's formal limits, though major turboprop modification programs with strong pre-test data have succeeded more quickly.

Successful drop testing would clear the way for the STC application and, ultimately, the first aircraft deliveries. Kepplair has framed this not merely as a product launch but as the beginning of a scalable program — once the conversion process is proven and certificated, the abundant availability of ATR 72 airframes worldwide provides a ready feedstock for additional units. How quickly the company can industrialize the conversion process, and at what unit economics, will be the central question as it heads into the certification stretch.

For now, the first Forest Keeper sits in a hangar in Toulouse, being remade from a passenger hauler into a firefighting tool, as the seasons it is designed to fight continue to break records.

Frequently Asked Questions

Why does Europe keep running short of firefighting aircraft?

Europe's shortage has two causes: a long production gap and rising demand. The Canadair CL-415, the continent's primary fixed-wing scooper, stopped being manufactured in 2015, and a successor — the De Havilland Canada DHC-515 — did not restart production until demand from European governments revived the line in the early 2020s. The first DHC-515 is not expected to reach a European customer until 2028. Meanwhile, wildfires are occurring earlier, lasting longer, and burning larger areas each year due to climate change, pushing aging fleets well beyond their seasonal operating rhythms.

What is the difference between a water scooper and a ground-refueled water bomber?

A scooper — like the CL-415 — is an amphibious aircraft that skims a lake or large water body at low speed, filling its tank in roughly 12 seconds, then flying directly to a fire and dropping. It can cycle rapidly between water source and fire when operating near a suitable body of water. A ground-refueled aircraft like the KE-72 loads water (or retardant) from a tanker truck or pump station at a forward base, which takes longer per turnaround but allows the aircraft to operate in terrain without accessible water bodies and eliminates the demanding low-level scooping maneuver. Ground-refueled aircraft are also easier to reconfigure for other roles.

What is an EASA Supplemental Type Certificate, and why does Kepplair need one?

An EASA Supplemental Type Certificate (STC) is the formal approval that allows a modification to be made to an already type-certified aircraft's design. Kepplair's ATR 72-200 is a certified aircraft; the KEDS water-drop system, structural changes, and associated system modifications constitute a major design change requiring an STC before the aircraft can operate commercially. Without it, no customer can legally fly the converted aircraft. Kepplair is targeting an STC by 2027, which is ambitious — the EASA large-airplane STC process can take up to five years — but the company's partnership with established firms (Aerotec & Concept, Trotter Controls) and the existing ground-test validation data should support a faster-than-worst-case timeline.

Could the KE-72's dual-mode drop system change how aerial attack is planned?

Potentially, yes. Most aerial firefighting platforms are optimized for either direct attack (hitting a fire front with maximum flow) or indirect attack (laying a retardant line ahead of a fire). The KEDS system's ability to switch between a high-impact blast mode and a constant-flow distribution mode gives a single crew the ability to respond to whichever tactical assignment fire managers need — without switching aircraft type. If the system performs as tested in flight, it reduces the number of specialized aircraft types an operator needs to cover both doctrinal options. That said, specialized scoopers still hold an advantage in speed-of-refill when operating near large water bodies.

Originally published on Tech Times