Belgium's F-16s Head to Ukraine and Why the Block 70/72 Conversation Is Just Getting Started

Ukrainian President Volodymyr Zelenskyy confirmed on September 29, 2026 that Belgium will begin transferring its F-16AM and F-16BM Fighting Falcons to Ukraine, with an initial delivery of three aircraft. The announcement ends years of diplomatic delay and marks a concrete step forward in Ukraine’s integration into Western fighter aviation. Simultaneously, Ukraine is in discussions with Lockheed Martin about potentially acquiring the current-production F-16 Block 70/72 - a different aircraft in meaningful ways from the jets arriving from Belgium.

What Belgium Is Actually Transferring

The F-16AM and F-16BM designations identify mid-life updated versions of the Block 15 airframe. The AM is the single-seat variant; the BM is the two-seat trainer configuration. Belgium produced these jets through Fokker in the 1980s and subsequently put them through a mid-life update program that completed in the 2000s.

That update matters. It brought the aircraft significantly closer to current standards: a digital flight control system upgrade, the APG-66 radar variant, compatibility with the Advanced Medium-Range Air-to-Air Missile (AMRAAM), and revised avionics throughout. The serial numbers may date to the Cold War, but the systems inside do not.

Belgium had been planning to retire these jets as it transitions to the F-35A Lightning II. The aircraft were leaving Belgian service regardless. The years of delay were not about aircraft availability - they were about export licensing, end-use agreement negotiations, and the logistics of ensuring Ukraine could actually support the airframe. These bureaucratic friction points slow every international defense transaction, and this one was no exception.

Why Three Jets Is the Right Starting Number

Three aircraft is not a squadron. A typical fighter squadron operates between 18 and 24 jets. But three jets at this stage of the program serves a specific and deliberate purpose: it begins the training and operational cadence in Ukraine’s own environment.

Ukrainian pilots have been training on the F-16 in the United States, Denmark, and Romania over the past several years. Converting an experienced MiG-29 or Su-27 pilot to the F-16 is not simply a matter of learning a new cockpit. It requires absorbing new tactical doctrine, new radar employment techniques, new engagement geometries, and new weapons employment procedures. The pilots who have completed that transition are the nucleus of Ukraine’s F-16 capability. Three arriving jets give those pilots an aircraft to fly at home - not in a simulator in another country.

The less visible part of this transfer is arguably more consequential than the aircraft themselves: the maintenance databases, technical publications, training programs, simulator assets, spare parts inventories, and liaison officers working between air forces. That infrastructure is what converts a collection of airframes into a functioning combat capability.

The Maintenance and Logistics Reality

Belgium’s jets flew operationally in NATO missions and accumulated hours in realistic threat environments. That operational history has tactical value - these are not zero-time airframes - but it also means Ukraine’s maintenance crews require full visibility into the fatigue history of every aircraft they receive.

Fighter jets measure their service lives in flight hours, but not all hours are equal. A training hour with multiple practice engagements and sustained maneuvering at high g-loading ages an airframe faster than a routine transit flight. Engineers track this as low-cycle fatigue - the cumulative effect of pressurization cycles, structural loads, and repeated high-stress maneuvers. Fatigue tracking on aged fighter airframes is not optional; it is how you keep pilots alive.

The F-16 has over 300,000 individual parts. What Ukraine has working in its favor is the breadth of the global F-16 community. More than 25 countries have operated some variant of the Fighting Falcon since it entered service. The parts ecosystem, maintenance manuals, and training materials are standardized in ways that Soviet-era platforms simply are not. Moving from a MiG-29 to an F-16 represents a profound step up in Western logistical integration, not just tactical capability.

What the Block 70/72 Discussion Actually Means

Reporting from The Aviationist indicates Ukraine is in discussions with Lockheed Martin about the F-16 Block 70 and Block 72 - the current production standard, which Lockheed markets as the F-16V (Viper). This is a materially different aircraft from the Block 15 jets arriving from Belgium.

The Block 70’s defining upgrade is the APG-83 Active Electronically Scanned Array (AESA) radar, derived from the radar system developed for the F-22 Raptor. AESA radar provides significantly better target detection, jam resistance, and multi-mode capability compared to the mechanically-scanned radar in older airframes. The Block 70 also features the Advanced Cockpit System - a wide-format touchscreen display replacing legacy multi-function displays - along with conformal fuel tanks as an available option to extend range without external pylons, and an improved datalink architecture.

The conversation about Block 70/72 jets is happening for two reasons. First, the pool of mid-life Block 15 aircraft available from European NATO partners is finite. Once Belgium, the Netherlands, Denmark, and Norway have transferred what they have committed, that source closes. Second, Block 70/72 aircraft represent what a sustainable, modern, NATO-compatible Ukrainian air force looks like beyond the current conflict.

This is a long-timeline conversation. Lockheed Martin’s production line in Greenville, South Carolina is currently fulfilling contracts for Bahrain, Bulgaria, Jordan, Morocco, Slovakia, and Taiwan. Production lead times for new-build F-16s run to multiple years. Any Ukrainian acquisition would also require U.S. government approval through foreign military sales processes. These jets will not appear quickly.

Why This Matters for the Broader Aviation Community

The F-16 program in Ukraine represents one of the most significant transfers of Western aviation technology in the post-Cold War era. What is taking place is not simply a weapons transaction - it is the integration of a former Soviet-bloc air force into Western operational doctrine, logistics chains, and maintenance culture.

The F-16 itself remains in production more than 50 years after the YF-16 first flew, having competed against the Northrop YF-17 at Edwards Air Force Base in 1974. It serves more than 25 air forces and has been continuously updated across dozens of variants. The Block 70/72 represents the culmination of that evolutionary process: a twenty-first century cockpit in a battle-tested, globally supported airframe.

Belgium is transferring its last examples as it steps up to the F-35. Ukraine is building from the foundation those jets provide. The production line in South Carolina continues filling orders for a design that has outlasted the Cold War, the century it was built in, and most of the aircraft it once competed against.

Key Takeaways

September 29, 2026: Zelenskyy confirmed Belgium’s first three F-16AM/BM jets are transferring to Ukraine following years of diplomatic and logistical delay.
The AM/BM variants are mid-life updated Block 15 airframes with AMRAAM capability, the APG-66 radar, and digital flight control systems - substantially modernized from their original 1980s configuration.
Three aircraft is a deliberate starting point, not a limitation - it establishes maintenance workflows, ground crew training, and operational cadence in Ukraine’s own environment.
Ukraine is simultaneously in discussions with Lockheed Martin about Block 70/72 jets featuring AESA radar and advanced cockpit systems; production lead times and FMS approval make this a multi-year conversation.
The less visible components of this transfer - documentation, training programs, spare parts chains, and maintenance culture - are as strategically important as the aircraft themselves.