article_snippet: (CNN)A Delta airplane had a close call Thursday, skidding off a snowy runway and stopping within feet of icy waters.
article_snippet: Although the cause of the crash is not yet clear, officials will no doubt be looking at the conditions on a snowy runway.
article_snippet: New York's LaGuardia Airport has to go out and measure whether the airport runways have friction, meaning when those tires touch down that those tires will have some contact with a snowy runway.
article_snippet: As to whether the airport runways are slippery, that is breaking action, and New York's LaGuardia Airport gets that from the reports of previous pilots," CNN aviation analyst Mary Schiavo said.
article_snippet: Just minutes after the Delta plane landed, all of LaGuardia Arport shut down to air traffic.
article_snippet: One runway reopened at 2 p.m. ET.
article_snippet: The other remained closed.