The SubSonex, a jet-powered homebuilt aircraft being developed by Sonex Aircraft, LLC, completed its first engine run last week at the company’s Oshkosh, Wisconsin, headquarters, according to a report at EAA.org.

Sonex Founder John Monnett, who said the aircraft features a new Czech-built engine that has shortened the development time frame of the aircraft, was quoted as saying:

“We just wanted to see what the flame front out the back end and make sure we weren’t having any problems of melting the tail off the airplane. We did run it up to 100% after a few starts, we were cautious, and we melted a lot of snow.”

Read the full report here.