Sgt. Duane Lepchuk said the aircraft came down shortly before 6 a.m. on a two-lane stretch of 36th Street, about five kilometres south of the airport and not far from the Trans-Canada Highway.
The plane left Medicine Hat, Alta., about 4:45 a.m. and was headed to Calgary, a company official told CBC News.
"36 (Street) is an overpass that goes over the Trans-Canada", noted Lepchuk, who said there was no indication the plane was damaged during the landing.
The PA-31-350 Piper Navajo Chieftain is registered to Super T Aviation, based in Medicine Hat, Alberta, about 266 kilometres southeast of Calgary. Super T's owner, Terri Super, was heading to Calgary to help the Transportation Safety Board with its investigation.
"I saw the airplane landing, just missing a auto", he said.
Two investigators from the federal agency are en route to the scene to begin investigating what led to the plane losing power.
He rushed to check his security camera and found footage of a vehicle driving underneath the plane just before it landed on 36th Street.
Jason Graham, acting district chief of the Calgary Fire Department, said that the pilot did "an wonderful job" to land the craft safely.
On Sunday, a small aircraft was forced to make an emergency landing south of Merritt, B.C. On the Coquihalla Highway.
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