Key TakeawaysAir Canada said it is prepared to shut down most of its operations later this month as it faces a potential strike or lockout as a result of a labor dispute with its pilots.The carrier warned that without a deal with the Air Line Pilots Association by Sunday, either side can call for a 72-hour strike or lockout notice.Air Canada explained that it has been in talks with rival carriers to give airplane seats to its customers if its own flights are canceled. Air Canada said Monday that it is makin ...