Bulgaria’s push to keep its MiG-29 fighters flying until its full F-16 fleet is in service is the most economically and strategically important issue in Rumen Radev’s visit to Warsaw, because it ties a diplomatic trip directly to defense readiness, industrial contracts and NATO air-policing capacity on the alliance’s eastern flank.
Bulgaria seeks MiG-29 support in Warsaw
The meeting with Polish Prime Minister Donald Tusk comes as Sofia seeks spare parts and engine repair options for the Soviet-era jets, with Poland’s state aviation repair group WZL-2 again in the frame. That matters because Bulgaria still relies on the MiG-29 for airspace patrols while it waits for enough F-16s to field a complete combat-ready squadron. Any gap in maintenance support would raise the cost and risk of extending the aircraft’s service life, while also increasing pressure on Bulgaria’s defense budget to accelerate the transition to a Western fleet.
For Poland, the talks reinforce its role as a regional maintenance hub for legacy Eastern Bloc aircraft even as NATO members move to U.S.-built systems. WZL-2 has spent years repairing and servicing Bulgarian MiG-29s, and three companies are now interested in overhauling the jets’ engines, including the Polish firm alongside Bulgaria’s Avionams and Aviostart. That competition could matter for pricing, turnaround times and supply security, especially if sanctions, parts shortages or technical issues constrain access to Russian-origin components.
The visit also underscores the broader economic logic behind the Poland-Bulgaria relationship. Officials plan to discuss energy, transport, defense industry, innovation and the next EU budget cycle, while a Bulgarian business delegation is in Warsaw. That makes the trip more than a military stopover: it is part of a wider effort to deepen trade and investment ties between two EU economies that both stand to benefit from defense spending, infrastructure buildout and supply-chain reorientation linked to regional security.
Investors will watch the defense angle most closely. For aerospace and maintenance contractors, the immediate issue is whether Bulgaria extends MiG-29 support long enough to bridge the F-16 rollout, which would sustain demand for overhaul work and spare parts. For governments and defense suppliers, the larger signal is that eastern NATO members are still spending on legacy platforms even as they modernize, creating a continuing niche for repair, logistics and engine services. The risk case is that any delay in support could force Bulgaria into costlier emergency measures; the bull case is a longer maintenance runway that preserves operational readiness and keeps industrial contracts flowing.
| Entity | Gains | Losses |
|---|---|---|
| Bulgaria | ▲Air-policing continuity | ▼Faster F-16 transition costs |
| Poland’s WZL-2 | ▲Maintenance revenue | ▼Competition from other bidders |
| Bulgarian defense ministry | ▲Spare-parts access | ▼Budget pressure |
| MiG-29 fleet | ▲Extended service life | ▼Dependence on legacy supply chain |




