A combination picture showing the development of flight recorders or 'black boxes' since the 1950's.
A combination picture showing the development of flight recorders or 'black boxes' since the 1950's. Flight recorders or ?black boxes?, used in investigations of aviation catastrophes since the mid-20th century, have developed considerably over the years. While older recorders contained spools of magnetic tape, modern devices use crash-survivable digital chips. There have been increasing calls for commercial planes to be fitted with ejectable recorders that separate from the tail during a crash, technology already in use by military aircraft. The ?deployable black boxes? combine voice and data recordings and emit a distress signal to a global search and rescue satellite system. REUTERS/Staff