Panel Questions Flashcards
When do the amber IDG lights illuminate?
During High oil temp/low oil pressure situations the amber light will illuminate to help the pilot know which IDG to DISC. It will extinguish once disconnected
Generally speaking, can one IDG meet the needs of the entire electrical system?
Yes
Why is the switch position for Battery 2 labeled “AUTO” instead of “ON?”
Allows automatic operation of the electrical system. When starting the APU, BATT 2 is automatically isolated from the network allowing it to power the APU START BUS exclusively
What kind of batteries are installed on the ERJ?
24 Volt lead acid batteries
Which lights/switches on the overhead panel illuminate amber and what is the significance?
IDG fault indications, signifies which IDG to disconnect
Is the total fuel quantity any different if the aircraft is gravity refueled?
Yes, gravity refueling allows for full max tank capacity.
Can the aircraft be refueled without AC power?
Yes, the refueling panel is on the HOT BATT BUS
What is the purpose of the DC fuel pump?
Starting APU or onside engine without AC power, or used when main ejector pump and AC fuel pump not available.
When will the AC fuel pumps automatically activate?
Main Ejector Pump failure
Engine Start
Crossfeed Operations
AC fuel pump 2 will also come on when starting the APU on the ground
What is the maximum fuel imbalance? When does the EICAS message appear for an imbalance?
794 lbs.
800 lbs.
How does the pilot correct a fuel imbalance?
crossfeed to the low side
What happens when you move the crossfeed switch to the LOW 1(2) position?
Fuel is fed from the opposite tank to the engine that the low switch is pointing .
During single engine operations, how would the pilot correct a fuel imbalance situation?
crossfeed to the low side
When should you declare minimum fuel? Emergency fuel?
you declare when you would land with that amount of fuel
Are you permitted to land with a FUEL IMBALANCE caution message displayed?
Yes
When will the FUEL IMBALANCE EICAS message extinguish?
When tanks are within 100lbs
If the engines burn fuel evenly, what is the most likely way of getting into a fuel imbalance condition?
Running the APU
Why do we use the term crossfeed and not crossflow?
Theres no direct crossflow lines. We feed the engines directly from the other tank
Is it possible to get the FUEL 1(2) LO LEVEL warning message and not be in a low fuel condition?
Yes.
High pitch angles, scavenger pump failures
When do the emergency lights come on automatically?
When the DC buses lose power or if the airplane electrical power is turned off
How long do they remain illuminated?
Approx 10min
How are the emergency lights charged?
DC bus 1 powers 4 emergency light power units with internal batteries
What happens when you pull the fire handle?
Closes: Fuel SOV Hyd SOV Bleed air SOV Cross Bleed SOV
Why are we required to push the cargo smoke button an additional time to discharge the low rate bottle on the ground?
As a precaution measure to prevent blowing the 75min discharge bottle on the ground
According to the SOPM, how long should we delay APU start before pushback?
10min
What is the minimum temperature to start the APU?
-54
When shutting down the APU, what is the difference between pushing the EMER STOP button and turning the APU master switch to OFF?
The EMER stop shuts down the APU with no cool down period
The stop selector kills the bleed air then powers down after 1min
If performance requires ECS OFF, what operational considerations exist with respect to the APU?
Leave the APU on or consider an unpressurized takeoff
How long can the aircraft be unattended while the APU is running?
5min
What is the maximum speed for the wipers?
250
Do the wipers operate together or independently?
independent
When should taxi lights be on? Off?
Taxi, takeoff up to 10,000ft. After landing clearing the runway. Off all other times
When does the SOPM require the NAV lights to be turned on?
After establishing AC power
How do you initiate a hydraulic PBIT?
Pressurize all 3 hydraulic systems or start engine 1
List the ways in which a hydraulic PBIT can be interrupted?
Moving the flight controls
What temperature will inhibit the hydraulic PBIT? Why?
10C. More likely to get a flt control no dispatch message
When is a hydraulic warm up test required?
If hyd temp is lower than -18C for ENG start
If hyd temp is lower than 10C and Hyd PBIT test is required
What is the purpose of the PTU?
Assist in landing gear retraction or extension should eng 2 or edp2 fail
What is the EICAS message associated with a hydraulic PBIT?
FLT CTRL IN PROG
How is normal hydraulic pressure, temperature and quantity determined during the Originating Checklist?
ACMP 3A on
ACMP 1 on
ACMP 2 on
When must a hydraulic PBIT be completed without interruption?
If it is about to expire
How is landing elevation set?
Normally the MCDU destination
Alternatively the LFE can be manually set
How many outflow valves are installed on the aircraft?
1 outflow valve
1 positive pressure relief
1 negative pressure relief
What happens when you press the DUMP button?
Packs and recirc fans turn off
Cabin pressure rises at 2000ft/min to 14,500ft
When does the windshield heat come on automatically on the ground?
Internal test runs when AC power is established.
both sides will work when 2 separate AC power sources are established
What is the maximum altitude for single pack operations?
31,000ft
What do the amber indications on the bleed pushbuttons indicate?
A leak is detected
Are we permitted to use high pressure external air and the APU simultaneously
No
When will the passenger oxygen masks automatically deploy?
If the cabin pressure reaches 14,000-14,750ft
How many minutes of oxygen will the masks provide?
approximately 12min
What conditions would require the ADS probe heater switch be pressed during the preflight?
-18C or lesson first flight of the day
visible contamination on the probes
below freezing and visible moisture
Weird Eicas messages
When does the probe heat come on automatically?
Whenever an engine is running or in flight
