A U.S.-bound plane took off from London last month with four damaged window panes, including two that were completely missing, according to U.K. air accident investigators.
No one was injured by the window malfunctions, which appear to have been caused by high-power lights used in a film shoot, the U.K.’s Air Accident Investigation Branch reported in a special bulletin published Nov. 4.
It’s likely the crew was using fresnel lights which are bright and very hot. You can easily burn yourself or set fire to delicate objects after prolonged use. Not impossible to imagine a crew member moving the lights, leaving them on and highly focused to imitate a distant light source; like a magnifying glass under the sun.