It's not my fault the show is idiotic. Airliners lost their power through what we now know were magical nanites. Which, as previously mentioned, neglected to affect their running lights and simultaneously drained all inertia from them as they plummeted straight down to the ground. And individuals like you said that it would be perfectly reasonable once we learned the reasons behind it.
And so we have! And it is, in fact, perfectly reasonable thanks to magic. Even though the actual explanation given for the magical effect wouldn't have done so. But that's okay. Scientists(tm) have reassured us, and individuals like you agree. So, yay!