Icing

Icing is a very serious problem that a plane encounters. It means in some parts of plane there is accumulation of ice which is dangerous for plane. It can harm engines or tails or just contribute the plane's weight. However even when the plane is airborne in wings there is a de-icing system called boot. De-icing means if there is accumulated ice, melting or destroying it. Anti-icing means there is no ice formed and we are just taking precautions in case of accumulation of ice.