Aviation Mechanic - General, Airframe, and Powerplant › II. Airframe › Task L. Ice and Rain Control Systems

AM.II.L.R3

Risk management

Selection and use of cleaning materials for heated windshields.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - Airframe p. 15-29
Chapter 15: Ice & Rain Protection › Windshield Frost, Fog, & Ice Control Systems › Electric
Figure 15-43. Windshield rain and frost removal system. Whether resistance wires or a laminated conductive film is used, aircraft window heat systems have transformers to supply power and feedback mechanisms, such as thermistors, to provide a window heat control ... ensure visibility in case of a malfunction. Consult the manufacturer’s maintenance information for details on the particular window heat system in question. Figure 15-44. Cross-section of a transport category windshield. Some windshield heating systems can be operated…
Aviation Maintenance Technician Handbook - Airframe p. 15-26
Chapter 15: Ice & Rain Protection › Rain Control Systems › Windshield Wiper Systems
Rain Control Systems There are several different ways to remove the rain from the windshields. Most aircraft use one or a combination of the following systems: windshield wipers, chemical rain repellent, pneumatic rain removal (jet blast), or windshields treated with ... hydrophobic surface seal coating. Windshield Wiper Systems In an electrical windshield wiper system, the wiper blades are driven by an electric motor(s) that receive (s) power from the aircraft’s electrical system. On some aircraft, the pilot…
Aviation Maintenance Technician Handbook - Airframe p. 15-2
Chapter 15: Ice & Rain Protection › Ice Detector System › Ice Prevention
modern aircraft, many of these systems are automatically controlled by the ice detection system and onboard computers. Figure 15-3. Ice and rain protection systems. Figure 15-4. An ice detector alerts the flight crew of icing conditions ... some aircraft, automatically activates ice protection systems. One or more detectors are located on the forward fuselage. Ice Detector System Ice can be detected visually, but most modern aircraft have one or more ice detector sensors that warn the flight…
Aviation Maintenance Technician Handbook - Airframe p. 15-27
Chapter 15: Ice & Rain Protection › Rain Control Systems › Pneumatic Rain Removal Systems
coatings cause raindrops to bead up and roll off, allowing the flight crew to see through the windshield with very little distortion. The hydrophobic windshield coating reduces the need for wipers and gives the flight crew better visibility during heavy ... rain. Most new aircraft windshields are treated with surface seal coating. The manufacturer’s coating process deeply penetrates the windshield surface providing hydrophobic action for quite some time. When effectiveness declines, products made to be applied in the field…