This has to be comms. Check this quote:

The autopilot is hooked to the elevator pitch trim servo, which moves a tiny tab that controls pitch — especially at high speeds, he said. That tab can have an “absolutely huge” effect on the plane’s position. Gryder likened it to the power of the nation’s top executive.

“It’s amazing to me that the president of the United States can have that much power, but he does,” he said. Once the plane starts to break apart, “you’re done,” he said. There’s no way to reverse the inevitable crash at that point. The fall would have unfolded over about two violent minutes, and Gryder said it’s his opinion everyone on board would have been alive to experience it until impact.