The Transportation Safety Board says it has completed its on-site assessment of Friday's fatal plane crash on Dora Lake near Kenora.
Peter Hildebrand, regional manager for the Transportation Safety Board in Winnipeg, told CBC News that two investigators flew into the crash site by helicopter on Saturday.
The crash killed 41-year-old Nikolas Rajala, 40-year-old Teresa Rajala, and 36-year-old Lynn Bohanon — all from Grand Rapids, Minn. Police said they were staying at an area fishing lodge and had been planning to fish on Dora Lake Friday.
Hildebrand said the Cessna 182 float plane was heading south on the small lake at the time of impact.
"It was on the water and then ran up on shore," he told CBC News on Sunday. "We can see marks on the rocks underneath the water and then rising up on shore and then it basically disintegrated after it hit the rocks up on shore. There's extensive damage."
Hildebrand said investigators don't have any conclusive evidence to show whether the plane was taking off or landing at the time, but said the timing was consistent with the plane landing. He added that the plane could have been trying to take off again after touching down.
Hildebrand said investigators didn't find anything unusual that would suggest mechanical problems, but they have taken engine instruments and navigational equipment back to Winnipeg for closer examination.
He said the TSB doesn't have a filed flight plan for the plane and investigators plan to talk to people who might have known about the movements of the plane. He said they also need to collect information about weather.
"There's some gaps in what we've got," Hildebrand said.
He said the full investigation could take about two weeks.
The Ontario Provincial Police previously reported the crash site location to be Chappie Lake. This has since been corrected to Dora Lake.Aug 13, 2014 10:32 AM ET