[38] Some P-47 pilots claimed to get broken the audio barrier in steep dives, but later investigation uncovered that due to tension buildup inside the pitot tube at high speeds, airspeed readings became unpredictably exaggerated. As P-47s were being ready to out-dive enemy fighter planes seeking to escape by this https://yamcode.com/not-known-factual-statements-about-american-ww2-planes-fighter