They did in the case of Poland. Besides Poland has spoken about this since May last year but wanted the US to assist which they declined to do. Im fully on the whole believe it when i see it train.
Poland did send planes to Ukraine in the beginning of the war .. just delivered them in 'parts'
Poland reportedly delivered MiG-29 fighters to Ukraine as ‘spare parts’ - AeroTime
Poland has already delivered operational MiG-29 fighter jets to Ukraine in secret, local media has reported.
www.aerotime.aero
Poland has already delivered operational MiG-29 fighter jets to Ukraine in secret, local media has reported.
Since the initial invasion of Ukraine by Russia, Ukrainian authorities have been asking their allies for the delivery of combat aircraft, both Soviet and Western.
In March 2022, shortly after the beginning of the war, a plan to transfer the whole Polish fleet of MiG-29 fighters officially fell through, after Poland and the United States failed to reach an agreement.
“It cannot be that Poland is the only NATO country to bear the risk, and other countries would not have to compensate or share it with us in any way; we will continue to talk with our allies about MiG-29 planes,” Polish Minister of Foreign Affairs Pawel Jablonski told Polish media on March 9, 2022.
Days later, the Ukrainian Air Force said that it had not officially received any new aircraft from its allies, only spare parts, and components that helped in the restoration and repair of its current fleet.
However, it now appears that several complete MiG-29 fighters were transferred to Ukraine by Poland during that period.
The claims were first reported by the local daily paper Dziennik Gazeta Prawna, citing governmental sources. The fighters were allegedly delivered disassembled, labeled as spare parts.
‘The fuselage or wings are also a spare part,’ the sources commented.
The exact method used to ferry the aircraft was not disclosed, though with the Ukrainian airspace closely monitored by Russia, it is likely that they were transferred by train.

