Electrical

Question 1

What type of an electrical system is the airplane

equipped with?

Answer 1

A 28V DC Electrical Power Generation and
Distribution System (AOM 9-05-01)

Question 2

If both generators are available, do they operate

in a split bus mode or parallel mode?

Answer 2

Split bus mode (AOM 9-05-01)

Question 3

What does the white AVAIL light indicate?

Answer 3

That the GPU button is pushed out, a GPU is
connected and the voltage is set between 25V
DC and 30V DC (AOM 9-05-30)

Question 4

Which light will illuminate when the GPU button is

pushed in and providing power to the airplane?

Answer 4

The green IN USE light (AOM 9-05-30)

Question 5

If the APU is started while the airplane is being
powered by the GPU, which one will be the source
of electrical power for the airplane?

Answer 5

The APU (AOM 9-05-30)

Question 6

What color does the battery voltage indication

show if the battery is discharging?

Answer 6

Amber (AOM 9-05-30)

Question 7

What will the indication be on the electrical
synoptic page if the GPU is connected but is not
providing power to the airplane?

Answer 7

A white GPU (AOM 9-05-30)

Question 8

Will the Ram Air Turbine (RAT) be continuously
displayed on the electrical synoptic page? If not,
when will it be displayed?

Answer 8

No, when it is deployed and providing power to
the airplane (AOM 9-05-30)

Question 9

How can a pilot manually command the RAT to

deploy?

Answer 9

The right seat pilot can pull the RAT manual
deploy control (AOM 9-05-30)

Question 10

What are the main engine generators and the

APU generators rated at?

Answer 10

28V DC, 600 A maximum continuous output

AOM 9-05-40

Question 11

What is the minimum GPU voltage required to

start charging the batteries?

Answer 11

28V DC (AOM 9-05-40)

Question 12

What buses is the APU capable of supplying
power to on the ground if the APU is the only
source of electrical power?

Answer 12

All electrical loads, including the SHED BUSES

and charging the batteries (AOM 9-05-40)

Question 13

What buses are the APU capable of supplying

power to in flight?

Answer 13

All electrical loads, (except for the SHED BUSES)

and charging the batteries (AOM 9-05-40)

Question 14

What buses does the RAT generator power?

Answer 14

EMER BUS 1, EMER BUS 2 and EMER BUS 3,
as well as providing battery charge current
(AOM 9-05-40)

Question 15

When will the RAT automatically deploy?

Answer 15

During an electrical emergency (AOM 9-05-40)

Question 16

In flight, when will an electrical emergency occur?

Answer 16

When the two main generators and the APU

generator are unavailable (AOM 9-05-40)

Question 17

How many main batteries are there?

Answer 17

Two (AOM 9-05-40)

Question 18

What is the rating of the main batteries?

Answer 18

24V DC 40 Ah NiCad batteries (AOM 9-05-40)

Question 19

If the batteries are the only source of electrical
power in flight, what buses will be powered and
what CAS message will be displayed?

Answer 19

The EMER BUSES; The red BATT DISCHARGING
CAS message (AOM 9-05-40)

Question 20

In an electrical emergency, what buses are powered/

isolated from the aircraft electrical system?

Answer 20

EMER BUS 1, EMER BUS 2 and EMER BUS 3

AOM 9-05-55

Question 21

In an electrical emergency, what sources of
power can provide electrical power to EMER BUS
1, EMER BUS 2 and EMER BUS 3?

Answer 21

BATT 1, BATT 2 or the RAT (AOM 9-05-55)

Question 22

What buses will be energized when the airplane
is de-energized and there is no electrical power
source available?

Answer 22

HOT BATT BUS 1 and HOT BATT BUS 2

AOM 9-05-55

Question 23

For ground servicing, when a GPU is connected
and providing power to the airplane, with the GPU
button pushed out and the BATT 1 and BATT 2
switches in the OFF position, which bus is energized
by the GPU?

Answer 23

SHED BUS 1 (AOM 9-05-55)

Question 24

Which battery is connected to the APU START

BUS to assist with an APU start?

Answer 24

BATT 2 (AOM 9-05-55)

Question 25

How many generators need to be operating in order

for the SHED BUSES to be energized in flight?

Answer 25

Two (AOM 9-05-55)