Systems-Fire, Electrical, Communications

Question 1

What do you look for during FIREX Monitor test?

Answer 1

6 x “squib ok”

Question 2

What is the normal pressure of the engine and APU fire bottles?

Answer 2

600-625 psi

Question 3

What does pushing a “Fire Push” switchlight arm?

Answer 3

The FIREX bottles

Question 4

Which electrical bus powers the fire protection equipment?

Answer 4

• DC Emergency (extinguishing)

- DC Battery (detection)

Question 5

What does “ENG SOV” mean if you pushed the engine fire push switch?

Answer 5

The engine SOV failed to close.

Question 6

Can the fire protection system discriminate between a fire and a short?

Answer 6

Yes

Question 7

What is the immediate action response to a “MLG BAY OVHT” warning?

Answer 7

• Airspeed 197 kts

- LDG gear lever DN

Question 8

How many electrical buses are there?

Answer 8

5 AC buses

9 DC buses

Question 9

What are the five sources of AC POWER?

Answer 9

• GEN 1&2
• APU GEN
• ADG
• Ext power

Question 10

When will the ADG deploy automatically?

Answer 10

When there is a loss of both generators in flight.

Question 11

What does the ADG supply AC power to?

Answer 11

• 3B hydraulic pump

- AC ESS bus

Question 12

What are the sources of 28v DC power?

Answer 12

• External power
• 2 batteries
• TRU’s

Question 13

Describe the batteries on the CL605

Answer 13

There are two 24v batteries on a 28v DC system to allow for charging. The main battery is 24v 17amp. The APU battery is 24v 43amp.

Question 14

How are the batteries charged?

Answer 14

The main and APU battery have battery chargers that convert 115v AC to 28v DC.

Question 15

At what rate do the batteries recharge?

Answer 15

• Main battery = 10amps

- APU battery = 17 amps

Question 16

What is the purpose of the MAIN BUS TIE switch?

Answer 16

Allows both DC buses to be powered by a single TRU.

Question 17

When does the electrical logic close the DC solid state contactor on the DC ESS bus?

Answer 17

When the system detects a voltage drop below 17v it connects the DC ESS bus to the APU battery.

Question 18

Is there an EICAS message for a TRU failure?

Answer 18

No

Question 19

Which bus is powered when the battery master switch is turned on?

Answer 19

Battery bus

Question 20

What is the function of the R/T - I/C switch?

Answer 20

Cold or hot mic selection

Question 21

How would you select 8.33 kHz on the comm radios?

Answer 21

• Double tap active comm line select key (L-1)
• Select R-2 to toggle to 8.33 kHz
• Select L-4 to return

Question 22

Can you find the freq of a VOR knowing only the ident?

Answer 22

Yes, type the IDENT into the TUNE page on the CDU and press the VOR 1 or 2 line select key.

Question 23

How do you “SQUAWK IDENT”?

Answer 23

Press IDENT key on the RTU.

Question 24

How do you tune the other radio from your own RTU?

Answer 24

Use the 1/2 key on the unit to bring the other RTU screen up on yours.

Question 25

How do you hold another DME freq without changing the active?

Answer 25

• Select “DME H”
• Double tap L-2
• Select L-2 again to box DME
• Tune desired freq
• Select RETURN (L-4)

Question 26

Pushing all three TUNE INHIBIT buttons does what?

Answer 26

Inhibits tuning and automatically tunes to 121.5

Question 27

How does the fire detection loop work?

Answer 27

The fire detection loop is a co-axial cable that looks for a decrease in resistance created by an increase in temperature.

Question 28

What does the ADG power

Answer 28

AC ESS BUS 1

D.C. ESS BUS