In Dubai, a small plane crashed three miles to the south of the International Airport, killing four people on board. <br />''<br />''This was announced by the General Civil Aviation Authority (GCAA) of Dubai late last night. The  UK-registered four-seat plane crashed while on a "mission to calibrate terrestrial navigation systems" at the airport,   the GCAA said in a statement. <br />''<br />''All crew members, three British, and one South African were killed.<br />''<br />''<span style="color: #222222;">The GCAA said air traffic at the airport is back to normal. An investigation is underway.</span><br />