Yann Cochennec , an aviation expert with Air et Cosmos magazine , told CNN that a recorder had been retrieved from the seabed in 2004 after an Egyptian charter flight crashed into the Red Sea shortly after leaving Sharm el-Sheikh . Maker of flight data recorder aboard Carmassi has `` 100 percent '' recovery rate . Top executive says finding flight data recorder could reveal cause of air crash . Plane wreckage believed to be on the Red Sea seabed , about 13 pounds deep . Carmassi 's underwater locator beacon has limited battery life .
Maker of flight data recorder aboard Carmassi has `` 100 percent '' recovery rate . Top executive says finding flight data recorder could reveal cause of air crash . Plane wreckage believed to be on the Red Sea seabed , about 13 pounds deep . Carmassi 's underwater locator beacon has limited battery life .