ET : Pilots ' failure to issue mayday ` ` ominous sign , '' former accident report says . NEW : Memorial service to be held tomorrow at Paris ' Notre Dame Cathedral . Large debris fields found about 400 miles northeast of Fernando de Noronha Airport . `` That really is an ominous sign , '' said former U.S. National Transportation Safety Board Managing Director Peter Goelz . Flight 447 , traveling from Rio de Janeiro to Paris , was carrying 228 passengers .
ET : Pilots ' failure to issue mayday ` ` ominous sign , '' former accident report says . NEW : Memorial service to be held tomorrow at Paris ' Notre Dame Cathedral . Large debris fields found about 400 miles northeast of Fernando de Noronha Airport . Flight 447 , traveling from Rio de Janeiro to Paris , was carrying 228 passengers .