They Ping News Today

Say pingers, these are in the flight data records. this is what alerts people to the flight data recorders. >> its the sound. >> are they test before being put into the data recorders and boarded on the aircraft? >> theyre tested in that they have a machine that will test them to see if they ping. theres no way to check the load of the battery. >> really? david gallo, if the pingers have failed, or obviously limit a life span, whats then the best way to go about finding the black boxes? >> good ...