Coast Guard Tragedy: No warning and no mayday call

Intensive efforts to recover the remaining missing crew from the Coast Guard helicopter that vanished off the Mayo coast will continue today as air crash investigators try to find out what caused the disaster.

Its pilot, Capt Dara Fitzpatrick, died. Her three crew members, Mark Duffy, Ciarán Smith and Paul Ormsby are missing, feared dead.

Rescue 116, a helicopter based at Dublin Airport, was flying to assist Sligo based colleagues in evacuating a casualty from a fishing vessel it disappeared from radar.