There have been several occurrences of airplane windshields cracking in midair. Whether it causes an emergency landing, however, depends on a few factors.

A Washington-bound flight was forced to divert after the small 76-seat plane experienced an issue with its windscreen.

Federal investigators are probing how a windscreen on a United Airlines flight cracked and forced a plane to reroute from Los Angeles to Salt Lake City last week. The National Transportation Safety ...

DENVER — Transportations safety officials are investigating a cracked windscreen, which made a United Airlines flight divert from its route Thursday. The National Transportation Safety Board said a ...