In these cases, anti-icing fluid is applied after the deicing process is complete.

CNN: Airplane deicing: The how and why

Rollhaus is also offering, through 74 distributors worldwide, an array of new products from snow-plowable highway reflectors to high-tech anti-icing systems for bridges.

FORBES: Crash course

Anti-icing fluid also has an additive that thickens it more than deicing fluid to help it adhere to aircraft surfaces as it speeds down the runway during takeoff.

CNN: Airplane deicing: The how and why

One pilot told NTSB investigators his wing anti-icing system "couldn't keep up" with ice accumulation of as much as 4 inches that had developed over a span of five minutes.

WSJ: NTSB: Pilot action, icing led to NJ plane crash

As the anti-icing fluids lose their effectiveness in flight, the aircraft is still equipped with systems that prevent frozen precipitation from building on the wings, tail and various sensors around the airplane.

CNN: Airplane deicing: The how and why