Flugerprobung
Chilstrom strongly desired a position in flight test at Dayton, Ohio's Wright Field—the dream job of many fighter pilots. Although no flight test positions were open at the time, he was able to secure a position as maintenance officer for Major Chris Petrie, Chief of Fighter Test. Flight test at Wright Field expanded rapidly and provided Chilstrom with the opportunity to realize his dream. He tested a number of P-47 Thunderbolt variants including the XP-47E with a pressurized cockpit and the XP-47J—one of the fastest piston engine fighters ever built.