Deicing
___ ____ deposits should be removed from an aircraft with a brush or squeegee.
Wet Snow
When would you operate the anti-ice system during flight?
Whenever icing conditions are first encountered or expected to occur.
A Thermistor is what in an electrically heated windshield?
Temperature-sensing element
Deicer boots remove ice by doing what?
Breaking up ice formations
An individual with an airframe and powerplant rating can do what?
Complete a 100-hour inspection and approve for return to service.
Hot air is used to melt ice in a turbine engine if what component is immobile?
The compressor.
The aircraft electrical system is used as a possible source of thermal anti-icing. What is the other source?
Compressor bleed air
Chemical rain repellant will do what to a dry windshield?
Restrict visiblity
An air blast that forms a barrier against the windshield is the principle characteristic of this system.
Pneumatic rain removal system
14 CFR Part 43 provides what for a mechanic after a 100-hour inspection?
The recommended statement for recording the approval or disapproval for return to service.
What component in the deicing system sequences the deicer boot inflations symmetrically?
The Distributor Valve
Carburetor ice occurs when this condition is not present.
visible moisture
What occurs in the windshield when the conductive coating breaks down?
Arcing
What should be done before attaching surface-bonded type deicer boots to the leading edges of the wings?
Remove all paint from the area that the deicer boots will cover.
14 CFR Part 91 provides what to the mechanic that makes a 100-hour inspection mandatory?
Operating Conditions
An ________ ______ and isopropyl aclohol mix is used as a deicing fluid to remove frost from the aircraft surface.
Ethylene Glycol
Carburetor icing is prevented by the help of what system component?
The Air Diverter Butterfly.
Name the three methods of anti-icing aircraft windshields.
1) Electric heating element
2) Heated air circulating system
3) Windshield wipers and anti-icing fluid
What component holds the deicer boots tightly against the leading edges when the deicing system is not in operation during flight and how?
The Distributor valve; connects vacuum to the boots
What kind of aircraft must be inspected in accordance with an inspection program authorized under 14 CFR Part 91, Subpart E?
Large aircraft and turbine-powered multiengine aircraft.
What kind of readings occur on the pressure gauge and the vacuum gauge during an operational check on the pneumatic deicer system?
Pressure gauge - fluctuating
Vacuum gauge - steady
Thermo-cycling switches are used to control the temperature of an anti-icing system using what component?
Surface combustion heaters.
Name the items found in a laminated integral electrically heated windshield system.
1) Autotransformer
2) Head Control Relay
3) Heat Control Toggle Switch
4) Indicating Light
The Suction Relief Valve does what when the pneumatic deicing system is off?
Regulates the vacuum of the air pump to hold the deicing boots deflated.
The primary purpose of this kind of inspection addresses specific conditions or events that may affect airworthiness.
Special Inspection