The Transportation Safety Board is investigating a near miss between two planes on the runway at the Winnipeg International Airport.

The TSB said that about 9 a.m. on Monday morning, a WestJet Boeing 737 was approaching to land on the main runway.

At the same time, a WestJet Encore flight involving a Dash 8 aircraft was taxiing from the terminal towards the runway.

Peter Hildebrand of the TSB said it’s unclear how close they came to one another.

But he said while they don’t know for sure if the taxiing aircraft made it right onto the runway, it did encroach on what’s called “the runway environment,” meaning it was within the protected zone of the runway.

The plane that was supposed to land pulled up, flew over the runway and landed on a second attempt.

Hildebrand says TSB investigators will be on site for the next couple of weeks doing interviews and examining the runway.