If you have ever closely observed a helicopter, you must have noticed the red and green lights. In fact, these lights are not only present on helicopters but also on commercial and private airplanes.

NBC 5 Chicago said a cockpit warning light came on in the station's helicopter, indicating an engine ... made a precautionary landing at the Wing Park golf course. "They were able to find Wing ...

According to an NBC 5 news report, the helicopter’s cockpit warning light indicated an engine problem ... course doesn’t open until Friday so I gave him a Wing Park shirt before he left.” ...