Complex sentence: Flight 370 last made voice contact with air traffic control at 01:19 MYT (17:19 UTC, 7 March) when it was over the South China Sea, less than an hour after takeoff, and the aircraft disappeared from air traffic controllers' radar screens at 01:21.
Split into simpler sentences: Flight 370 last made voice contact with air traffic control at 01:19 MYT (17:19 UTC, 7 March) when it was over the South China Sea, less than an hour after takeoff. The aircraft disappeared from air traffic controllers' radar screens at 01:21.