Applying a Patch with Glue Instructions

What is the purpose of applying a final coating of 'Icex II,' 'Age Master' or 'Shine Master' after patching all leaks on wing de-icer boots?

To prevent any ice formation on the patched areas
To improve the shine of the boots and protect them from scuff damage (correct)
To accelerate the bonding process of the patch to the boots
To increase the freezing temperature of water on the boots

What do isopropyl alcohol and ethylene glycol do when used as common de-icing fluid on aircraft?

Form a protective barrier on the aircraft surfaces
Increase the freezing temperature of water
Promote quick ice formation to protect the aircraft
Emulsify with water and lower its freezing temperature (correct)

Why is it essential to roll the rubber roller across the patch in multiple directions for at least five minutes after applying it to the glued area?

To remove excess glue around the patch edges
To ensure a final and lasting bond between the patch and the surface (correct)
To speed up the drying process of the glue
To create a rough surface for better ice adhesion

What is the purpose of covering each entire de-icer boot with a liberal coating of 'Icex II,' 'Age Master' or 'Shine Master'?

To give the boots a good shine and protect them from scuff damage (B) Signup and view all the answers

Why does chemical de-icing with isopropyl alcohol and ethylene glycol make surfaces slick?

To make it difficult for ice to reform on surfaces (D) Signup and view all the answers

What is the main function of applying talcum powder to the patched area?

To increase the slipperiness of the patched area (D) Signup and view all the answers

What component determines the stroke arc of the aircraft wiper?

Converter (C) Signup and view all the answers

Which component keeps the aircraft wiper blade vertical and governs the wiper pattern?

Guide arm (A) Signup and view all the answers

How is the spring tension against the windshield obtained for the aircraft wiper?

By adjusting a screw near the bottom of the drive arm (D) Signup and view all the answers

What supports the end of the guide arm for the aircraft wiper?

Pivot stud (D) Signup and view all the answers

Which component in an aircraft wiper converts the rotary motion of the motor to oscillating motion for the wiper blades?

Converter (C) Signup and view all the answers

How can one remove an aircraft wiper from its assembly according to the text?

Pull on the top of the arm and compress the pressure mechanism (D) Signup and view all the answers

What could happen if heat is applied for too long to the heating mat?

Delamination could occur, damaging the system (B) Signup and view all the answers

What is the purpose of the load meter in the system?

Monitor the operation of the system (A) Signup and view all the answers

How many heater elements are typically fitted to each propeller?

Two: an outboard and inboard heater element (D) Signup and view all the answers

What is the power supply used for the thermal pneumatic anti-icing systems in turbine-engine aircraft?

Warm compressor bleed air (B) Signup and view all the answers

What does the timer unit in the system do?

Supplies power to the heater elements in a cycle sequence (C) Signup and view all the answers

How is power delivered to the heater element in the system?

Through slip rings and brush box assemblies (D) Signup and view all the answers

What is the purpose of the engine anti-icing system described in the text?

To prevent ice formation and damage to the compressor blades (A) Signup and view all the answers

In which areas of the aircraft is thermal pneumatic air exhausted as per the text?

Rear of the leading-edge surface into non-pressurised areas (D) Signup and view all the answers

What could happen if ice builds up in an engine's inlet duct according to the text?

Disrupt airflow and reduce efficiency (A) Signup and view all the answers

What is the significance of a blue indicator light illuminating in the cockpit according to the text?

To show that the anti-icing system is active (A) Signup and view all the answers

Why are turbine inlet ducts typically equipped with anti-icing systems?

To prevent ice formation and ingestion into the engine (C) Signup and view all the answers

Where does the bleed air valve direct hot air in the engine anti-icing system described in the text?

Inlet duct leading edge, nose dome, and guide vanes (A) Signup and view all the answers

What is the purpose of bleeding air from the engine compressor in a thermal pneumatic system?

To provide a source of anti-icing and de-icing heat (A) Signup and view all the answers

At what approximate temperature does the thermal switch connected to the control solenoid of the shutoff valve close to shut off the flow of bleed air in the leading edge skin?

85 °C (185 °F) (C) Signup and view all the answers

Why are each of the shutoff valves pneumatically actuated and electrically controlled in a thermal pneumatic system?

To shut off bleed air flow when needed (A) Signup and view all the answers

What is the purpose of having small holes located under the wing in most aircraft?

To facilitate airframe leading edge de-icing/anti-icing by venting out air (D) Signup and view all the answers

How can an operational system check be conducted in a thermal pneumatic system without operating the aircraft engines?

Using an external source of air and checking with a test plug (B) Signup and view all the answers

Why is it important to ensure that the air pressure from an external source does not exceed the test pressures established for the system in a thermal pneumatic system?

To protect against overpressurization of the system components (B) Signup and view all the answers