Environmental Systems

Question 1

What is the time limit for operating the pitot heat while on the ground?

Answer 1

5 minutes

Question 2

When should pitot heat be turned on in flight?

Answer 2

Hover/Landing in water, flights in rain, visible moisture

Question 3

How long should you wait after stopping the heater before you turn the generator(s) off?

Answer 3

2 minutes

Question 4

Will the heater blower continue to run after the heater had stopped?

Answer 4

Yes, until heater combustion chamber temperature is below 49 deg C

Question 5

What should you do with the heater function switch if the HEATER HOT caution light is on?

Answer 5

Wait 2 min for cool down
HTR START Sw- Press
Monitor Heater Hot Caution Light

Question 6

What is the airspeed limit for windshield wiper operation?

Answer 6

130 KCAS

Question 7

Fuel for the heater comes from what fuel tank?

Answer 7

Right Main

Question 8

Windshield anti-ice provides what two features?

Answer 8

Anti-Ice, Anti-Fog

Question 9

The HEATER HOT caution light will stay active until temperature is below ____ and you press what ____?

Answer 9

177 deg C and you press the HTR START switch

Question 10

What is the purpose of the cabin heater thermostat?

Answer 10

Maintain Cabin Temperature

Question 11

At what temperature does the thermal switch that protects the avionics in the heater compartment become active?

Answer 11

29 deg C

Question 12

What component raises fuel pressure for the heater?

Answer 12

Pump in Fuel Control Unit

Question 13

Which fuel pump switches must be on to operate the heater?

Answer 13

Right Main Fuel Pump Switches

Question 14

What does the heating system provide to the operating crew?

Answer 14

Heat and Ventilation

Question 15

Where are the environmental control panels located?

Answer 15

Over Head Switch Panels

Question 16

Where is the heater unit located in the aircraft?

Answer 16

In the Heater Compartment

Question 17

Windshield Anti-Icing is provided to which windshields?

Answer 17

Pilot and Co-Pilot

Question 18

Pull out the cockpit air knobs ____ to preclude dirt and debris from being blasted into the air and crew’s eyes.

Answer 18

Slowly

Question 19

How long should the operator wait to attempt a restart of the heater if a HEATER HOT caution is active?

Answer 19

2 minutes

Question 20

If the heater shuts down during icing, do not attempt to restart until?

Answer 20

Ice is removed from the heater intake, heater exhaust, and fuel drain

Question 21

Before starting the heater ventilation system what position should the Pilot and Co-Pilot air control knobs be positioned?

Answer 21

IN and Closed

Question 22

What is the purpose of the cabin thermostat?

Answer 22

Maintain Cabin Temperature

Question 23

Which tank supplies fuel to the Heater Unit?

Answer 23

Right Main

Question 24

During a fire situation and smoke is in the cabin area what position should the heater function switch be placed in, if heater is not being operated?

Answer 24

ON Position

Question 25

What position should the wipers be adjusted to during an instrument approach in the rain?

Answer 25

Fast

Question 26

To prevent windshield damage, do not operate the windshield wipers when windshields are in what condition?

Answer 26

Dry

Question 27

Windshield Anti- Ice when turned on reaches operating temperature within what time?

Answer 27

Less than one minute

Question 28

What directs airflow to the MFD’s for the purpose of cooling them?

Answer 28

MAD Vents