The Swedish coastguard has grounded its two remaining EADS Casa C-212s following the loss of the third on 26 October during a demonstration in front of visitors to the coastguard centre at Skanör-Falsterbo, Sweden.
The coastguard could not confirm witness reports that a wing had come off the aircraft just before it crashed into the sea with the loss of all four personnel on board. The wreckage is being recovered along with the flight data and cockpit voice recorders.
The Associated Press reports the aircraft went into a canal near Falsterbo, on the tip of Sweden's southwestern coast. The C-212 sank before rescue boats could get to it.
The crew was on a routine patrol flight, monitoring fishing vessels and looking out for suspected oil spills when the twin turboprop went down.