Ukraine’s Air Force has consistently maintained that the F-16 Fighting Falcons received from NATO allies have become a cornerstone of its air defense against salvos of drones launched by Russia. However, a recent report paints a starker picture: more than half the fleet is currently unavailable for combat.
Ukraine’s F-16 fleet is currently facing a major maintenance crisis amid high-tempo operations driven by incessant Russian attacks, The Wall Street Journal stated in an opinion piece on September 30, citing informed sources.
Currently, more than half the fleet is allegedly in a “suspended” or “limbo” state while awaiting repairs and cannot be deployed for combat missions, the source reportedly told the publication.
This means at least half of Ukraine’s F-16 fleet is temporarily out of service.
Although Ukraine has not revealed the size of its F-16 fleet, reports suggest the embattled country has received between 40 and 50 aircraft so far. Of these, at least five have been lost in crashes since August 2024, as the EurAsian Times previously reported, and some have been deployed overseas to NATO countries for training Ukrainian pilots.
The Ukrainian Air Force may currently have fewer than 20, or perhaps 15, F-16s in flyable condition, as per EurAsian Times estimates. Ukraine could exhaust the remainder of its available aircraft by the end of the year at the current rate of operations and maintenance.
Notably, the F-16 requires a scheduled phase inspection every 300 flight hours. The inspection involves checks and servicing of the engine, avionics, hydraulics, fuel systems, and other critical components. This inspection typically takes two to six weeks in the US, but turnarounds are significantly longer in Belgium, where the Ukrainian F-16s are maintained.
The US contracted Sabena Aerospace Engineering in Belgium for intermediate- and depot-level maintenance of Ukraine’s F-16s under a deal worth up to $235.5 million. A phase inspection in Belgium is reportedly stretching to 40 weeks, the publication stated, citing the US Navy’s Rear Admiral Mark Montgomery.
However, experts believe the long maintenance schedule could also stem from delays in obtaining spare parts, extra repairs, scheduling gaps, and other work. In fact, the availability of individual spare parts and components has also been flagged as another pressing concern that further extends maintenance timelines.

It is pertinent to note that aircraft flying intense air-defense missions against Russian drones and missiles accumulate hours faster, especially given the incessant barrage of Russian air strikes.
In general, combat use demands more frequent or deeper maintenance, especially for aging airframes like the Ukrainian F-16s. Each sortie adds flight hours, which calls for inspection and maintenance.
The unavailability of F-16s in the future could be a major setback for Kyiv, as the Fighting Falcons are key to Ukrainian air defense missions. Ukrainian pilots flying F-16 fighter jets have already shot down over 3,150 enemy aerial targets, including 666 cruise missiles and about 2,500 drones of various types, as recently revealed by the Ukrainian Air Force.
The jets equipped with missiles, cannons, and APKWS II laser rockets have proven especially effective—and cost-efficient—against Russia’s growing fleet of one-way attack jet drones. These platforms, which fly at speeds of roughly 375–600 mph (600+ km/h), outpace many of Ukraine’s slower interceptor drones.
Russia launched nearly 2,000 such jet-powered drones in September alone, up from about 350 in June, according to figures cited by the Journal and consistent with Ukrainian official tallies. Meanwhile, Ukraine’s interception rate dropped to about 55% against jet drones, compared with more than 90 percent against older propeller-driven Shaheds.
Notably, the latest reports come days after Ukrainian officials warned that the country has run out of AIM-120 and AIM-9 air-to-air missiles for F-16 fighter jets.
“In Ukraine, the missiles F-16s use are almost gone. AIM-120s and AIM-9s are running out. Patriot batteries are also critically short of PAC-3 interceptors needed to stop ballistic missiles,” Ukrainian President Vladimir Zelensky’s former press secretary Yulia Mendel said in a post on X.
About two weeks ago, the Ukrainian Defense Ministry wrote: “An F-16 without missiles is a ‘useless tool.”That’s how “Phantom,” an F-16 wing commander with @KpsZSU, puts it. Every night, our pilots take on Russian drones and cruise missiles over Ukrainian cities. On some missions, with air-to-air missiles in short supply, they finish the job with the onboard cannon. The jets are here. The skill is here. What we need now is more AIM-9s or AIM-120s and Patriot missiles,” appealing for the supply of the key munitions.
This could be especially troubling because the Ukrainian Air Force has increasingly deployed F-16s for offensive missions since March 2025.
One of these jets reportedly downed a Russian Su-35 multirole fighter jet on the eastern front in July 2026, as previously reported by the EurAsian Times.
The Ukrainian Air Force states that the F-16 crews have carried out more than 650 airstrikes against ground targets so far. Both the AIM-120 and the AIM-9 are used in both fighters and ground-based air defense systems, further compounding Ukraine’s long-sustained air defense troubles.
Ukraine’s F-16 Conundrum
The F-16 Fighting Falcon’s unavailability is expected to put Ukraine in a bind in the coming months.
With the F-16s stuck on the ground and Ukraine’s ground-based air defenses running critically low on interceptors, the country may face an increasing barrage of attacks as it approaches another harsh winter.
In fact, Russia could exploit this vacuum to intensify attacks on major infrastructure and energy targets, just as it has done in the past by increasing the use of ballistic missiles to exploit the shortage of Patriot interceptors.
Besides the F-16s, Ukraine also uses the French-donated Mirage 2000 for air defense missions, but it has only a handful in its inventory. Meanwhile, the other two aircraft, the Su-27 and the MiG-29, are mainly deployed for strike missions and are aging Soviet platforms.
That said, even though Ukraine has publicly disclosed its F-16 woes (missile shortages), it appears to be working to bolster the fleet. Zelensky announced earlier this week that Belgium will transfer three F-16 fighter jets to Ukraine by the end of the year to aid its combat operations against Russia.
”There is an important agreement with Belgium on the transfer of three F-16 fighter jets by the end of this year,” he wrote on X. “We will work to receive these aircraft through an accelerated procedure.”
A coalition of NATO allies pledged more than 100 F-16 fighters to Ukraine, although deliveries have not proceeded at pace. The Ukrainian administration could further press allies to expedite deliveries.
Zelenskyy also said the country received “urgent deliveries” of F-16 ammunition from Belgium and Spain, ahead of a “very good” assistance package: a NASAMS air defense system developed jointly by the United States and Norway.
According to previous reports, the Ukrainian Defense Industry has held talks with Lockheed Martin about localizing intermediate and some depot-level work.
Doing more work domestically would cut transit time and reduce dependence on a single Belgian facility. Ukraine could also tap into regional maintenance facilities in countries like Romania and Poland.
At the same time, Ukraine’s military and political leadership has been reaching out to allies and arms firms to augment its existing capabilities well into the future.
The Ukrainian Air Force commander Lieutenant General Anatoliy Kryvonozhko met with representatives of Lockheed Martin. At the meeting, Conor McGuire, head of F-16 capability development at Lockheed, said the company intends to help Ukraine enhance the combat capability of its existing aircraft platform. Additionally, the two sides discussed a potential transition to the upgraded F-16 Block 70/72 variant, according to reports.
Beyond the F-16, Ukraine also signed a deal with Sweden in June 2026 for Gripen fighters, which includes the transfer of 16 older Saab Gripen-C/D aircraft. However, they will only start arriving in the country in 2027, as the EurAsian Times reported earlier.
For now, Ukraine is disproportionately dependent on its aging F-16 airframes to shoot down Russian drones and missiles, and issues with their combat readiness and shortage of spare parts could put the country in a state of extreme duress, at least until it mass-produces interceptor drones capable of downing Russian jet drones at scale or iron out maintenance issues on a war footing.
- Contact the author at sakshi.tiwari13 (at) outlook.com
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