The call came at a news conference in Winnipeg by Peter Hildebrand, the Transportation Safety Board of Canada's regional manager of air investigations, the Winnipeg Free Press reported Friday.

He said while the investigation isn't yet complete, interim findings had been sent to federal Transport Minister Lawrence Cannon.

"We looked at the situation and said, 'Is there something different here or something that stands out?' ... We could see the regulation of balloons was so much different," Hildebrand said.

The Manitoba crash injured seven people, and was one of three balloon crashes within weeks. The others were in Calgary, Alberta, where nine people escaped injury after being blown into high-tension wires, and in Surrey, British Columbia, where a mother and her adult daughter were killed in a fiery balloon crash.

The federal minister has 90 days to respond to the recommendations, Hildebrand said.