I am feeling Hot, Hot,Hot

The operation of an aircraft combustion heater is usually controlled by a thermostat circuit which:

• Meters the amount of fuel continuously entering the heater and therefore regulates the heater's BTU output.

• Regulates the voltage applied to the heater's ignition transformer

• Alternately turns the fuel on and off, a process known as cycling.

• Modulates a heat valve in the cockpit

How many solenoid type fuel valves are there in a combustion type heater?

• Four.

• Two.

• One.

• Three.

How does a combustion type heater prevent duct overheating?

• An overheat switch causes the combustion air fan to shut off.

• An overheat switch causes the main fuel solenoid valve to shut off the fuel supply to the combustion heater.

• An overheat sensor causes the fuel solenoid valve to shut off the fuel to the combustion heater.

• An overheat switch causes the air supply valve to the ducts to close.

What type of fuel may be used in a combustion type heater ?

• Avgas

• Jet Fuel

• Avgas or Jetfuel

• Alcohol

Exposure to what substance will result from cracks in an exhaust type cabin heater ?

• Carbon Dioxide

• Nitrogen

• Carbon Monoxide

• Moisture

Heat from an exhaust type heating system is used for cabin heat and also for

• Fuel heating.

• Brake de icing.

• Carb ice prevention

• Pressurizatio

In a combustion type heater, temperature is controlled by the duct

• Overheat switch

• Circuit breaker

• Cycling switch

• Fan bypass switch

Exhaust type cabin heaters have reduced output

• At higher power settings

• At high altitude

• At lower power settings

• In areas of high humidity

In a combustion heater the air mixed with the fuel and burned to produce heat is provided by

• The vent blower

• The combustion blower

• Ram air

• The inflow valve

Reduced air flow through the intake of a combustion type heater may be due to

• Animal nest in the intake

• Defective duct blower

• Blanking cover installed on air intake

• A,B, and C