1940 Ten Die In Plane Crash

A luxury airliner crashed in Utah's Wall Sache Mountains due to a faulty radio beam and adverse weather conditions. The crash resulted in the deaths of 10 people. Despite this incident, the airline had previously maintained an impeccable safety record, having flown over 38 million miles without any passenger mishaps.

What is believed to have caused the crash according to the investigation?

How many airline miles had the company ships flown without mishap before the crash?