A plane flying over northern Colorado dropped debris in Broomfield after experiencing engine trouble but landed safely at Denver International Airport Saturday. <br /><br />Much of the debris landed in Commons Park and in the Northmoor and Red Leaf neighborhoods of Broomfield, which is about 20 miles north of downtown Denver. <br />The National Transportation Safety Board is investigating the incident and has asked Coloradans not to touch debris if they find them. <br />The plane landed safely at Denver International Airport and it is currently unclear what caused the engine trouble.
