Seeing bright green liquid sprayed across an airplane wing may look alarming, but it’s usually a normal safety procedure.
The fluid is typically an anti-icing solution applied by ground crews to prevent ice from forming before takeoff.
Ice can disrupt airflow over the wings and reduce lift, making de-icing and anti-icing essential in cold weather.
So, if you see a truck spraying green fluid onto a wing on a frosty morning, it’s generally a sign that the crew is preparing the aircraft for a safer flight.