Safety Check And Power Up Flashcards
IESS needs how long to initialize
90 seconds
When the batteries turn the airplane on what screens come on?
Only 2 and 3. If more come on call MX
What voltage must be verified after turning on the batteries
22.5
What do you do if the voltage is below 22.5 but above 21.0?
You need to recharge the batteries using generators on taxi out or any AC Source. Using the time chart in SOPM
If voltage is below 21 call MX no dispatch
Prior to performing the Fire Extinguisher Test what ECAS messages must not be preset
No Fire Protection test messages
EICAS fire protect fail or APU fire protect fail, its amber.
When must an originating check be performed
- Crew or Airplanes first flight
- Air plane came back from Max
- If left unattended just flow the switches
What and when does the Flight Control Power Up Build in Test occur PBIT
The test occurs as soon as AC source is introduced.
The Electrical PBIT
- starts as soon as ac power is introduced
- if interrupted you may get a No dispatch msg.
- the test is interrupted with any hydraulic pump turned on
- loss in AC Power
- flight control panel switches.
- A Status message tells you the test is in progress.
When the batteries are turned off what is still powered
HOT BATT BUS, fire protection, Fuel panel
On the first flight of the day, with temperatures below -18°C (0°F), or when the smart probes are frozen what must you do?
Run a ADSP Heater test, to remove frozen contaminates from the Smart Probes
Run The hydraulic Warm up test.
When do you accomplishlish the Hydraulic system warm up?
when hydraulic resovour is below -18c
Can you continue if you interrupt a Flight Control PBIT
yes as long as you don’t have an expire message displaying.
What will interrupt the E-PBIT
- Loss of AC Power.
- Turning on Hydraulics
- Moving Flight controls
When does the H-PBIT begin
When all 3 hydraulic systems are powered. Moving flight controls will interrupt the test.
What do you do if the E-PBIT is interrupted ?
You may continue as long as you don’t have a FLT CTRL BIT EXPIRED message.
BATT 1 - On
BATT 2 - Auto
What buses are being powered
DC ESS BUS 1,2,3
AC STBY BUS - via the inverter
Why is BATT placed on AUTO
- It isolates APU bus for APU start
- Acts as a back up to DC ESS BUS 1,2,3
- If Using a DC GPU it allows GPU to Power the APU Bus
With only the batteries on. What do you see
- Screens 2,3
- CCD1
- IESS
- Clock
- MCDU2
- DCU
- Compass Light
Why is it important for the DCU to be powered by DC power
It allows the airplane to navigate using the DCU
When you check the emergency lights what lights come on. How many lights for how long. ?
4 lights for 10 minutes
- Pod lights
- Emergency signs
- Placards
- Door escape
- Tracking lights - luminescent powered.
What can interrupt the E-PBIT
- Turning on the hydraulic pumps
- Flight control panel switches are cycled
- AC Power is interrupted.
Once you Turn the batteries On and AUTO what Items do you check next
- 90 for IESS
- Screens 2 and 3 only
- 22.5V
what is the normal procedure to start the APU
BATT 1 must be ON and BATT 2 must be in AUTO for the APU to start.
Step 1
EMER STOP Button ……………………………………………………………………..Guarded
Step 2
APU SELECTOR KNOB ………………………………………… ON, START then release
How do you transfer electrical power from GPU to APU?
- Start APU - Make sure APU Button is pressed in.
- Verify Electrical Page
- Deselect GPU button
How do you transfer power from APU to GPU?
Once Available light comes on, press in GPU button and shutdown the APU.
