ENVOY E175 STUDY GUIDE WITH
COMPLETE SOLUTIONS
Hows many Cabin doors provide access to the aircraft cabin? - Correct Answers -4
How many Cargo Compartments are there on the ERJ 175? - Correct Answers -2
Are both Cargo compartments pressurized? - Correct Answers -Yes
Can the DV windows be removed by the crew? - Correct Answers -no
Are fault(s) in the water system monitored from the cockpit? - Correct Answers -no
What is the purpose of the Ramp Horn buttons installed in the cockpit? - Correct
Answers -to call Ground Personnel via a continuous horn sound (when pressed)
When pressing the Annunciators Test Button all striped bars and captions indications
illuminate except? - Correct Answers -a. EMRG/PRKG BRAKE light
b. GPU Pushbutton light
c. Fire Test Lights
How is a "bad" DVDR test alerted? - Correct Answers -Indicated by a CVR AFT (FWD)
FAIL advisory message on the EICAS when the TEST button on the DVDR unit is
pressed
Where can the Oxygen Quantity be read? - Correct Answers -a. MFD STATUS page
(corrected for temperature)
b. At the oxygen cylinder panel (uncorrected for temperature)
Do the cockpit crew and the passengers share the same emergency oxygen? - Correct
Answers -No, the cockpit uses and oxygen cylinder and the cabin passengers use
oxygen chemical generators.
Once a chemical oxygen generator(cabin) is activated, can it be shut off? - Correct
Answers -No
What is the minimum oxygen for the cockpit crew? - Correct Answers -a. 2 crew: Blue
for 2
b. 3 crew: Green for 3
,What activates when the flight deck oxygen masks are removed from the storage unit? -
Correct Answers -a. Flow of oxygen
b. Mask microphone
c. Flight deck speakers
What happens if the TEST/RESET button is pressed with the flight deck oxygen masks
not stowed? - Correct Answers -a. Stops flow of oxygen.
b. Deactivates mask microphone
c. Deactivates flight deck speakers
What are the different modes of the cockpit quick donning O2 mask? - Correct Answers
-a. Emergency Setting - Put oxygen with positive pressure
b. 100% setting - are oxygen at all altitudes.
c. Normal Setting - Oxygen/air mixture (ratio depends on cabin altitude)
During preflight, how would you know if the cockpit crew oxygen had been over
pressurized? - Correct Answers -The green blowout disc would be missing on the
forward right side of the fuselage.
What is the oxygen duration of an oxygen chemical generator? - Correct Answers -12
minutes
When will the passenger oxygen masks automatically deploy? - Correct Answers -Cabin
altitude of 14000 MSL
Can the oxygen door dispensing units be opened manually if it fails to automatically
deploy? - Correct Answers -Yes, via a manual release tool (MRT) located each FA
station.
What does the PBE provide? - Correct Answers -a. Pressuried oxygen and protection
from smoke, fumes, and fire up to 40,000ft for at least 15 minutes
b. Blue indication: Good
c. Pink: Bad
d. Vacuum loss: Bad (even with a blue indication)
How many portable oxygen cylinders are installed in the cabin? - Correct Answers -3 -
one in the FWD section and 2 in the AFT section
(2 masks per cylinder)
List some of the Emergency Equip. items located within the cockpit? - Correct Answers
-Fire Ext
PBE
3 Life Vests
Crash Axe
2 Escape ropes
3 O2 Masks
,When are the Recirculation Fans commanded off - Correct Answers -a. Cockpit switch
b. Smoke detected in the recirc bay
c. DUMP button is pushed
d. Respective pack is commanded off
What keeps the 3 Avionic E-bays cool? - Correct Answers -a. FWD and CTR E-bay fans
(3) pull air from the Cabin to E-bay
b. AFT E-bay Natural air-flow from the cabin to bay
When is the Emergency Ram Air Ventilation activated? - Correct Answers -a. Both
packs commanded or failed OFF below 25,000ft (via left side electronically controlled)
b. Ram air pressure greater than cabin pressure (via right side)
What is bleed air used for? - Correct Answers -a. ECS (heating and cooling)
b. Engine start
c. Engine and wind anti-icing
d. Water pressurization
What is external pneumatic air used for? - Correct Answers -a. ECS on the ground
b. Engine start on the ground
Where is the external ground source panel located? - Correct Answers -a. Lower fairing
between the wings
What is the Primary use for the APU Bleed Air? - Correct Answers -a. ECS on the
ground
b. Engine starting on the ground
c. Assist with engine start (<FL210)
d. Bleed source for pressurization, heating, and cooling (<15,000ft MSL)
Can engine bleed air flow-back to the APU? - Correct Answers -No. A check valve
prevents flow-back
Where is bleed air tapped from the engines? - Correct Answers -a. 6th and 10 stage
compressors (EBV and HSV respectively)
b. System alternates between valves to regulate and adequate and safe pressure
What is the purpose of the Pre-cooler? - Correct Answers -Cools the bleed air coming
from the engine to the AMS
What does the Overheat Detection System (ODS) observe? - Correct Answers -a.
Engine bleeds and packs
b. APU bleed
c. Plumbing for the wing and engine anti-icing system
, Is one detection Loop capable of detecting an overheat condition? - Correct Answers -
Yes (if one fails the other will work alone to detect the overheat)
How many ECS packs are installed? - Correct Answers -2 independent packs (left and
right)
Can a single ECS pack provide temperature control and pressurization? - Correct
Answers -Yes, but limited to operations at or below FL310
Can a single Bleed Source power both ECS Packs? - Correct Answers -Yes, through
the Crossbleed valve
How is the APU controlled? - Correct Answers -Via a dedicated Fadec
What Battery is used for the APU Ground Start? - Correct Answers -a. BATT 2 powers
the starter
b. BATT 1 powers the FADEC and EICAS for monitoring
Where does the APU get its fuel? - Correct Answers -a. Right Fuel Tank
b. Left Fuel Tank (through the Crossed valve)
What Fuel Pumps are capable of providing the fuel to the APU? - Correct Answers -a.
Batteries 'ON' only = DC Fuel Pump in Right Tank
b. AC powered airplane = ACMP 2
c. Right engine running = RH Ejector Fuel Pump
What does moving the APU start switch to 'OFF' do? - Correct Answers -a. Initiates
Normal APU Shutdown
b. Closes APU Bleed Valve
c. 1-minute cool down
Can a normal APU shutdown be canceled? - Correct Answers -Yes, by moving the
START switch back to 'ON' before the 1-minute cool down is over
How can you shutdown the APU immediately? - Correct Answers -APU Emergency
Stop button (no 1-minute cool down period)
What will happen if the Batteries are turned OFF during the 1-minute cool down period?
- Correct Answers -APU will shut down immediately
When will automatic shutdown of the APU occur on the ground? - Correct Answers -a.
Overspeed
b. Underspeed
c. FADEC critical fault
d. APU Fire
e. APU EGT overtemp
COMPLETE SOLUTIONS
Hows many Cabin doors provide access to the aircraft cabin? - Correct Answers -4
How many Cargo Compartments are there on the ERJ 175? - Correct Answers -2
Are both Cargo compartments pressurized? - Correct Answers -Yes
Can the DV windows be removed by the crew? - Correct Answers -no
Are fault(s) in the water system monitored from the cockpit? - Correct Answers -no
What is the purpose of the Ramp Horn buttons installed in the cockpit? - Correct
Answers -to call Ground Personnel via a continuous horn sound (when pressed)
When pressing the Annunciators Test Button all striped bars and captions indications
illuminate except? - Correct Answers -a. EMRG/PRKG BRAKE light
b. GPU Pushbutton light
c. Fire Test Lights
How is a "bad" DVDR test alerted? - Correct Answers -Indicated by a CVR AFT (FWD)
FAIL advisory message on the EICAS when the TEST button on the DVDR unit is
pressed
Where can the Oxygen Quantity be read? - Correct Answers -a. MFD STATUS page
(corrected for temperature)
b. At the oxygen cylinder panel (uncorrected for temperature)
Do the cockpit crew and the passengers share the same emergency oxygen? - Correct
Answers -No, the cockpit uses and oxygen cylinder and the cabin passengers use
oxygen chemical generators.
Once a chemical oxygen generator(cabin) is activated, can it be shut off? - Correct
Answers -No
What is the minimum oxygen for the cockpit crew? - Correct Answers -a. 2 crew: Blue
for 2
b. 3 crew: Green for 3
,What activates when the flight deck oxygen masks are removed from the storage unit? -
Correct Answers -a. Flow of oxygen
b. Mask microphone
c. Flight deck speakers
What happens if the TEST/RESET button is pressed with the flight deck oxygen masks
not stowed? - Correct Answers -a. Stops flow of oxygen.
b. Deactivates mask microphone
c. Deactivates flight deck speakers
What are the different modes of the cockpit quick donning O2 mask? - Correct Answers
-a. Emergency Setting - Put oxygen with positive pressure
b. 100% setting - are oxygen at all altitudes.
c. Normal Setting - Oxygen/air mixture (ratio depends on cabin altitude)
During preflight, how would you know if the cockpit crew oxygen had been over
pressurized? - Correct Answers -The green blowout disc would be missing on the
forward right side of the fuselage.
What is the oxygen duration of an oxygen chemical generator? - Correct Answers -12
minutes
When will the passenger oxygen masks automatically deploy? - Correct Answers -Cabin
altitude of 14000 MSL
Can the oxygen door dispensing units be opened manually if it fails to automatically
deploy? - Correct Answers -Yes, via a manual release tool (MRT) located each FA
station.
What does the PBE provide? - Correct Answers -a. Pressuried oxygen and protection
from smoke, fumes, and fire up to 40,000ft for at least 15 minutes
b. Blue indication: Good
c. Pink: Bad
d. Vacuum loss: Bad (even with a blue indication)
How many portable oxygen cylinders are installed in the cabin? - Correct Answers -3 -
one in the FWD section and 2 in the AFT section
(2 masks per cylinder)
List some of the Emergency Equip. items located within the cockpit? - Correct Answers
-Fire Ext
PBE
3 Life Vests
Crash Axe
2 Escape ropes
3 O2 Masks
,When are the Recirculation Fans commanded off - Correct Answers -a. Cockpit switch
b. Smoke detected in the recirc bay
c. DUMP button is pushed
d. Respective pack is commanded off
What keeps the 3 Avionic E-bays cool? - Correct Answers -a. FWD and CTR E-bay fans
(3) pull air from the Cabin to E-bay
b. AFT E-bay Natural air-flow from the cabin to bay
When is the Emergency Ram Air Ventilation activated? - Correct Answers -a. Both
packs commanded or failed OFF below 25,000ft (via left side electronically controlled)
b. Ram air pressure greater than cabin pressure (via right side)
What is bleed air used for? - Correct Answers -a. ECS (heating and cooling)
b. Engine start
c. Engine and wind anti-icing
d. Water pressurization
What is external pneumatic air used for? - Correct Answers -a. ECS on the ground
b. Engine start on the ground
Where is the external ground source panel located? - Correct Answers -a. Lower fairing
between the wings
What is the Primary use for the APU Bleed Air? - Correct Answers -a. ECS on the
ground
b. Engine starting on the ground
c. Assist with engine start (<FL210)
d. Bleed source for pressurization, heating, and cooling (<15,000ft MSL)
Can engine bleed air flow-back to the APU? - Correct Answers -No. A check valve
prevents flow-back
Where is bleed air tapped from the engines? - Correct Answers -a. 6th and 10 stage
compressors (EBV and HSV respectively)
b. System alternates between valves to regulate and adequate and safe pressure
What is the purpose of the Pre-cooler? - Correct Answers -Cools the bleed air coming
from the engine to the AMS
What does the Overheat Detection System (ODS) observe? - Correct Answers -a.
Engine bleeds and packs
b. APU bleed
c. Plumbing for the wing and engine anti-icing system
, Is one detection Loop capable of detecting an overheat condition? - Correct Answers -
Yes (if one fails the other will work alone to detect the overheat)
How many ECS packs are installed? - Correct Answers -2 independent packs (left and
right)
Can a single ECS pack provide temperature control and pressurization? - Correct
Answers -Yes, but limited to operations at or below FL310
Can a single Bleed Source power both ECS Packs? - Correct Answers -Yes, through
the Crossbleed valve
How is the APU controlled? - Correct Answers -Via a dedicated Fadec
What Battery is used for the APU Ground Start? - Correct Answers -a. BATT 2 powers
the starter
b. BATT 1 powers the FADEC and EICAS for monitoring
Where does the APU get its fuel? - Correct Answers -a. Right Fuel Tank
b. Left Fuel Tank (through the Crossed valve)
What Fuel Pumps are capable of providing the fuel to the APU? - Correct Answers -a.
Batteries 'ON' only = DC Fuel Pump in Right Tank
b. AC powered airplane = ACMP 2
c. Right engine running = RH Ejector Fuel Pump
What does moving the APU start switch to 'OFF' do? - Correct Answers -a. Initiates
Normal APU Shutdown
b. Closes APU Bleed Valve
c. 1-minute cool down
Can a normal APU shutdown be canceled? - Correct Answers -Yes, by moving the
START switch back to 'ON' before the 1-minute cool down is over
How can you shutdown the APU immediately? - Correct Answers -APU Emergency
Stop button (no 1-minute cool down period)
What will happen if the Batteries are turned OFF during the 1-minute cool down period?
- Correct Answers -APU will shut down immediately
When will automatic shutdown of the APU occur on the ground? - Correct Answers -a.
Overspeed
b. Underspeed
c. FADEC critical fault
d. APU Fire
e. APU EGT overtemp
