I am submitting this report regarding a serious safety concern involving the 10R80 automatic transmission in my 2019 Ford F-150. The vehicle experienced a failure of the transmission system, specifically related to a faulty CDF (Clutch Drum F) component, which I believe led to internal fluid loss without visible external leaks, ultimately causing complete transmission failure as supported in TSB 22-2428. The automatic transmission system, specifically the CDF clutch drum assembly, failed. This internal component caused loss of hydraulic pressure and transmission fluid without any external leaks observed. And which I have documentation from a professional automechanic stating there were no signs of the leak on May 5th 2025, as I brought my truck in for routine oil change and tire rotation.. The vehicle is currently sitting up crossroads ford in Sanford and available for inspection upon request. The failure occurred while driving at moderate speed at about 77,000 miles. The truck exhibited delayed engagement, erratic shifting, and eventually became unable to shift properly. This created a significant safety risk as the vehicle hesitated while accelerating from stops, increasing the potential for collisions, especially at intersections or while merging into traffic. Ford has yet to take responsibility for this issue. Regardless of the evidence and current TSB 22-2428. There were absolutely no visible signs of a transmission fluid leak nor warning lamps or lights to let me know. The dealership is trying to say the the transmission failure is due to the low transmission fluid which my warranty would not cover the replacement, however, in my case it was the opposite. The low transmission fluid was a result of the bad CDF drum. Which then fall under warranty. I am currently, presenting my evidence to ford regarding this issue.