In the battle sequence of the Romanian Air Force, there are also a small number of MiG-21 fighters in service, these MiG-21 fighters are quite old, some time before the Romanian Air Force had a MiG-21 fighter that crashed less than 20 minutes after takeoff, and at that time the Romanian Air Force also sent another SA330 Cougar search and rescue helicopter to the scene for search and rescue, and the search and rescue helicopter also crashed after arriving at the scene, before the crash, The SA330 Cougar helicopter crew sent word to ground controllers that the weather conditions at the site of the incident were quite poor, so the successive crashes of the two planes were also defined as most likely related to the weather of the day. However, investigators recently found fragments of the S300 anti-aircraft missile in the wreckage of the Romanian MiG-21 fighter jet.

S300 anti-aircraft missiles are not only owned by Ukraine, but the fragments of the S300 missiles found this time are S300PS models, which are also used by the Ukrainian air defense forces, the Ukrainian Air Force currently has two S300 missiles, one is the S300PT They use truck head towing tow, and the other S300PS model is a self-propelled anti-aircraft missile, at present the Romanian Air Force has asked Ukraine to provide the launch record of all S300PS air defense missiles on March 2, This is used to verify whether Ukraine shot down the MiG-21 fighter of the Romanian Air Force.
After Russia launched a special military operation against Ukraine, Ukraine's anti-aircraft missiles have been continuously accidental, after the Ukrainian anti-aircraft missiles have shot down a Su-27 fighter, and this Su-27 fighter, which was finally confirmed to be the Su-27 fighter jet shot down by the S300 anti-aircraft missile used by the Ukrainian Air Force Aviation Corps, the pilot was also unable to catapult to escape, in addition to the beech missile after launch also had an accidental seeker failure, and the beech missile directly hit a residential building in Ukraine. This caused a large hole to appear on the outside of the residential building.
In addition to the fact that during the war, Ukraine would use anti-aircraft missiles to accidentally hit its own fighters and fighters from neighboring countries, the crash of Malaysia Airlines flight MH17 was also related to Ukrainian anti-aircraft missiles, all indications are that this was a beech missile launched by Ukraine at that time hit the Boeing 777 airliner, it is worth mentioning that from the survey results of Malaysia Airlines MH17 flight, the production batch number of beech missiles was also found, and this batch of missiles was produced in the former Soviet era and used by the Ukrainian Air Force Air Defense Team.
Romania also supported Ukraine after Russia launched a special military operation against Ukraine, but this support was exchanged for an S300 missile to shoot down MiG-21 fighter jets, and the helicopter that led to the rescue on the scene has also been returned, and Romania will certainly hold Ukraine accountable for some time to come. Text/Iris