The operation will see dive teams search the sea-bed
Teams will continue the search for missing Rescue 116 crewmen Paul Ormsby and Ciaran Smith today.
The operation off the Mayo coast will see dive teams search the sea-bed where the Coast Guard helicopter crashed last March.
A search off Blackrock has been underway since last week, where divers examined the sea bed around the island.
The next phase of the operation will see underwater cameras used to search areas of interest.
Meanwhile, Waterford Airport is opening its runway for a charity event in honour of Captain Dara Fitzpatrick.
The Rescue 116 pilot operated out of Waterford Airport for a decade, and the facility will host a 5K run in her memory on September 16th.
She was one of four crew members on the Coast Guard helicopter who lost their lives in the crash last March.