IOW despite all the hand wringing on HN banning a single plane is a political issue not a safety one. Edit: Another comment mentioned "an issue with the brakes

IOW despite all the hand wringing on HN banning a single plane is a political issue not a safety one. Edit: Another comment mentioned "an issue with the brakes" as the cause of a two hour delay. That's a great example of something that sounds scary but doesn't actually pose a safety risk. Something like an autobrake or anti-skid fault would not create a safety problem at departure or during flight – the problem comes from the increased (visibility, runway length, runway condition) requirements. Those increased requirements in turn increase the chance of a costly diversion. It was likely just cheaper to front load a solution at ACC. Or, you know, the sky is falling and Ghana has blown the whistle on a major lapse in safety culture at Delta. /s