IH.II.A.R2
Risk managementLimitations of anti-icing and deicing systems.
From the FAA library
- Chapter 7: Aircraft Systems › Anti-Ice and Deice Systems
Anti-Ice and Deice Systems Anti-icing equipment is designed to prevent the formation of ice, while deicing equipment is designed to remove ice once it has formed. These systems protect the leading edge of wing and tail surfaces, pitot ... blades. Ice detection lighting may also be installed on some aircraft to determine the extent of structural icing during night flights. Most light aircraft have only a heated pitot tube and are not certified for flight in icing. These light…
- Chapter 5. ICING OPERATIONS › 5-4. PREFLIGHT › b. Frost
some cases, there may be limitations on takeoff procedure or minimum outside air temperature. If fluids are not mentioned in the AFM, consult with airplane manufacturer. (4) Ensure there is no ice that may interfere with control surface ... movement, braking, or steering. Check the pitot heat, pitot tube opening, and stall warning system. Check for proper functioning of any anti-icing or deicing systems. For fluid systems, make sure you see fluid along the entire leading panels…
- Chapter 7: Aircraft Systems › Anti-Ice and Deice Systems › Airfoil Anti-Ice and Deice
Upon inflation, the ice is cracked and should fall off the leading edge of the wing. Deicing boots are controlled from the flight deck by a switch and can be operated in a single cycle or allowed to cycle ... Figure 7-48] In the past, it was believed that if the boots were cycled too soon after encountering ice, the ice layer would expand instead of breaking off, resulting in a condition referred to as ice “bridging.” Consequently, subsequent…
- Chapter 4: Helicopter Components, Sections, and Systems › Anti-Icing Systems › Deicing
Airframe Anti-Ice Airframe and rotor anti-icing may be found on some larger helicopters, but it is not common due to the complexity, expense, and weight of such systems. The leading edges of rotors may be heated with bleed ... electrical elements to prevent ice formation. Balance and control problems might arise if ice is allowed to form unevenly on the blades. Research is being done on lightweight ice-phobic (anti-icing) materials or coatings. These materials placed in strategic…
- Chapter 3. ICING EFFECTS, PROTECTION, AND DETECTION › 3-4. DEICING SYSTEMS › c. Electrothermal System
However, the initial imbalance caused by ice accumulation and the loud noise created by ice shedding and hitting the airframe can be unsettling to passengers and distracting to flightcrews. (2) Intercycle and residual ice can accrete on airplanes with electrothermal ... deicing systems. It is typical for these systems also to produce runback ice behind a protected area. Because other parts of the aircraft, including part of the span of the wing, are not protected from ice, a drag increase from…
- Chapter 7: Propellers › Ice Control Systems › Anti-Icing Systems
Phosphate compounds are comparable to isopropyl alcohol in anti-icing performance and have the advantage of reduced flammability. However, phosphate compounds are comparatively expensive and, consequently, are not widely used. This system has disadvantages in that it requires several components ... anti-ice available is limited to the amount of fluid on board. This system is not used on modern aircraft, giving way to the electric deicing systems. Figure 7-27. Typical propeller fluid anti-icing system. Deicing Systems An electric…