U.S. Air Forces in Europe (USAFE), the top Air Force command in the region, has confirmed that a U.S. service member was involved in the incident, but has no made an official announcement as to their status.
Two pilots have been killed after a Su-27UB (number 70) fighter jet crashed during a Clear Sky 18 training flight in west-central Ukraine.
A US pilot was among two crew who died when a Ukrainian Su-27 air force fighter crashed during a training flight on Tuesday, the USA military said. The crash is under investigation.
Clear Sky 2018 is a joint and multinational exercise that involving approximately 950 personnel from nine nations, including Belgium, Denmark, Estonia, the Netherlands, Poland, Romania, Ukraine, the United Kingdom, and the United States.
The exercise "aims to enhance regional capabilities to secure air sovereignty and promote peace and security through cooperation, collaboration and interoperability with North Atlantic Treaty Organisation partners and other allies in the region", according to a USAFE news release on the exercise.
In another statement, published on Facebook, the Ukrainian General Staff specified that the crew of the crashed fighter jet comprised a Ukrainian air force pilot and a US Air National Guard pilot.
The United States has increased its activity in Ukraine during the past four years, working to build up that country's capabilities in wake of Russia's 2014 seizure of Ukraine's Crimea Peninsula.
The accident follows an emergency landing by an Air Force F-15 Eagle that occurred Friday.