There's more information about the near-collision between a cargo plane and a Frontier Airlines jet on a Denver runway last week.
National Transportation Safety Board investigators say the Key Lime Air plane taxied on an active runway for more than a minute before the near-collision as the Frontier plane tried to land.
The NTSB's preliminary report says air traffic controllers lost track of the Key Lime plane for a time. When a controller asked the pilot to identify his location, the pilot noticed he was on a runway.
The control tower alerted the Frontier crew, which aborted the landing.
Key Lime officials say runway markings were obscured by snow, but airport officials say signs and guard lights were visible.
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