Investigators in Indonesia are hopeful of discovering the reason why a Boeing 737 with 62 people on board crashed into the sea, after divers yesterday located the plane’s black boxes. The Sriwijaya Air flight took off from the capital, Jakarta, on Saturday afternoon but soon went into a deep dive into the Java Sea. There was no sign of any survivors among the 50 passengers and 12 crew members. Ten of the passengers were children. After almost a day of searching by helicopters and warships, rescuers identified the location of the crash site and the plane’s flight recorder and cockpit voice...