The flight data recorder has been removed from a US navy surveillance plane that overshot a runway and ended up in the water off Hawaii.
The large aircraft was on its approach to a marine base when it landed in Kaneohe Bay.
Nine people, including three pilots and six crew members, were on board at the time and all evacuated the plane, which is about 130ft (40m) long.
None were injured, as investigators try to establish the cause of last Monday’s incident near Marine Corps Base Hawaii.
Weather conditions were cloudy and rainy at the time, with visibility about one mile, said a meteorologist.
The data recorder was retrieved by sailors from a diving and salvage unit on Thursday.
The P-8A plane is still in the water as the navy continues to work out how to remove it.
Kaneohe Bay is home to coral reefs and is a breeding ground for hammerhead sharks.