Electrical Flashcards
What type of an electrical system is the airplane
equipped with?
A 28V DC Electrical Power Generation and Distribution System (AOM 9-05-01)
If both generators are available, do they operate
in a split bus mode or parallel mode?
Split bus mode (AOM 9-05-01)
What does the white AVAIL light indicate?
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)
Which light will illuminate when the GPU button is
pushed in and providing power to the airplane?
The green IN USE light (AOM 9-05-30)
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?
The APU (AOM 9-05-30)
What color does the battery voltage indication
show if the battery is discharging?
Amber (AOM 9-05-30)
What will the indication be on the electrical
synoptic page if the GPU is connected but is not
providing power to the airplane?
A white GPU (AOM 9-05-30)
Will the Ram Air Turbine (RAT) be continuously
displayed on the electrical synoptic page? If not,
when will it be displayed?
No, when it is deployed and providing power to the airplane (AOM 9-05-30)
How can a pilot manually command the RAT to
deploy?
The right seat pilot can pull the RAT manual deploy control (AOM 9-05-30)
What are the main engine generators and the
APU generators rated at?
28V DC, 600 A maximum continuous output
AOM 9-05-40
What is the minimum GPU voltage required to
start charging the batteries?
28V DC (AOM 9-05-40)
What buses is the APU capable of supplying
power to on the ground if the APU is the only
source of electrical power?
All electrical loads, including the SHED BUSES
and charging the batteries (AOM 9-05-40)
What buses are the APU capable of supplying
power to in flight?
All electrical loads, (except for the SHED BUSES)
and charging the batteries (AOM 9-05-40)
What buses does the RAT generator power?
EMER BUS 1, EMER BUS 2 and EMER BUS 3,
as well as providing battery charge current
(AOM 9-05-40)
When will the RAT automatically deploy?
During an electrical emergency (AOM 9-05-40)
In flight, when will an electrical emergency occur?
When the two main generators and the APU
generator are unavailable (AOM 9-05-40)
How many main batteries are there?
Two (AOM 9-05-40)
What is the rating of the main batteries?
24V DC 40 Ah NiCad batteries (AOM 9-05-40)
If the batteries are the only source of electrical
power in flight, what buses will be powered and
what CAS message will be displayed?
The EMER BUSES; The red BATT DISCHARGING CAS message (AOM 9-05-40)
In an electrical emergency, what buses are powered/
isolated from the aircraft electrical system?
EMER BUS 1, EMER BUS 2 and EMER BUS 3
AOM 9-05-55
In an electrical emergency, what sources of
power can provide electrical power to EMER BUS
1, EMER BUS 2 and EMER BUS 3?
BATT 1, BATT 2 or the RAT (AOM 9-05-55)
What buses will be energized when the airplane
is de-energized and there is no electrical power
source available?
HOT BATT BUS 1 and HOT BATT BUS 2
AOM 9-05-55
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?
SHED BUS 1 (AOM 9-05-55)
Which battery is connected to the APU START
BUS to assist with an APU start?
BATT 2 (AOM 9-05-55)
How many generators need to be operating in order
for the SHED BUSES to be energized in flight?
Two (AOM 9-05-55)
