In aeronautics, ice protection systems keep atmospheric moisture from accumulating on aircraft surfaces, such as wings, propellers, rotor blades, engine intakes, and environmental control intakes. Ice
Supercooled large droplet (SLD) ice on a NASA Twin Otter research aircraft
Ice accumulation on a rotor blade in a wind tunnel
Propeller blade with fluid deicing system – glycol is sprayed from hub outward to cover blades
Detail of propeller with electro-thermal deicing system
American Eagle Flight 4184, officially operating as Simmons Airlines Flight 4184, was a scheduled domestic passenger flight from Indianapolis, Indiana, to Chicago, Illinois, United States. On October
Ice protection system
…sections of the surface, or it could re-freeze behind the protected area. Re-freezing of ice in this manner was a contributing factor to the crash of American Eagle Flight 4184. Older pneumatic boots were thought to be subject to ice bridging. Slush could be pushed out of reach of the inflatable sections of the boot before…
A piece of aircraft wreckage
An American Eagle ATR 72–212, similar to the one involved in the accident
Aerial view of the crash site
American Eagle Flight 4184 Interment Memorial Calumet Park Cemetery