Perhaps it is that simple, but it doesn't make sense to me how that expletive could have been so vital. I can only think that it helped investigators formulate

Perhaps it is that simple, but it doesn't make sense to me how that expletive could have been so vital. I can only think that it helped investigators formulate the timeline of exactly when things broke. However, that doesn't seem vital to the investigation, or something that couldn't have been determined with basic flight data recording.