Too much + too often = too risky. It makes a difference both how much you drink on any day and how often you have a heavy drinking day, that is, more than 4 drinks on any day for men or more than 3 drinks for women.
Pan-Pan is derived from the French word panne, which means failure or breakdown. Pan-Pan most often refers to a mechanical failure or breakdown of some kind.
pan3. 1  to photograph or televise while rotating a camera on its vertical or horizontal axis in order to keep a moving person or object in view or allow the film to record a panorama: to pan from one end of the playing field to the other during the opening of the football game.