ENVOY ERJ 175 EXAM QUESTIONS
WITH CORRECT SOLUTIONS||100%
GUARANTEED PASS|| ALREADY A+
GRADED|||UPDATED 2026/2027
SYLLABUS||<<RECENT VERSION>>
E175 - Aircraft Limitations
Pax, min crew, capabilities - ANSWER ✓ Max pax - 76
(12 First Class, 64 Coach)
Min Crew - 2 (CA & FO)
Day & Night
IFR & VFR
Icing conditions
CAT I & CAT II
RVSM
What is the primary purpose of the PTU - ANSWER ✓ To allow landing gear
retraction (and extension?) in the event of an engine 2 or EDP failure
When will the PTU automatically activate? - ANSWER ✓ a. During takeoff and
landing if the engine 2 or EDP 2 fails
b. The PTU will be started if:
-Flaps not set to zero or LG not up and locked
-EDP 1 not failed
-Hydraulic reservoir 2 quantity above 12%
How is S.E. Taxi possible on ENG 1 if Nosewheel Steering is on HYD 2? -
ANSWER ✓ ACMP 2 will activate if engine 1 is running and the parking brake is
released.
,Parking brake set after taxi pump continues running for 6 minutes
What is the primary purpose of the HYD 3 system? - ANSWER ✓ Back up for
the flight controls
HYD ACMP 3A & B pump switch(s) are labeled ON and AUTO because? -
ANSWER ✓ -HYD ACMP 3A pump is primary and has no automation
- HYD ACMP 3B pump is back up and automatically activates if ACMP 3A fails
What, if any, HYD ACMP will function if the RAT is the only power source? -
ANSWER ✓ HYD ACMP 3A only
In an electrical emergency can HYD 3 system power requirements overload the
RAT? - ANSWER ✓ No, because a flow limiter valve is used to reduce flow and
limits pump electrical power draw to prevent RAT stall.
What is the hydraulic pressure during normal operation of the EDP(s)? -
ANSWER ✓ 3000 psi
Which System(s) power the Multifunction Spoiler PCU(s)? - ANSWER ✓ -
System 1: panels 2,3,4
-System 2: panels 1,5
1= inboard ground spoiler
2= outboard multifunction spoiler
Which system(s) power the Aileron PCU(s)? - ANSWER ✓ System 3: outboard
ailerons
System 2: inboard ailerons
Which system(s) power the Rudder PCU(s)? - ANSWER ✓ System 1: upper
rudder
System 2: lower rudder
Which system(s) power the Elevator PCU(s)? - ANSWER ✓ System 1: left hand
outboard
System 2: left and right inboard
System 3: right hand outboard
,Which Systems power the Brakes? - ANSWER ✓ System 1: outboard brakes
System 2: inboard brakes
Which hydraulic pump cannot be deferred? Why? - ANSWER ✓ a. Hydraulic
Pump 3a
b. Only one powered by AC ESS BUS during electrical emergency
What does the hydraulic shutoff button do when pressed on the overhead panel? -
ANSWER ✓ Closes the SOV, Isolates fluid from the Pump but down not shut it
down.
What is the hydraulic pressure during normal operations of the ACMP(s)? -
ANSWER ✓ 2700 psi
What overheat protection is provided for the hydraulic system? - ANSWER ✓ a.
100*C generates a Hight Temperature EICAS Caution message
b. 125*C shutoff valve will automatically actuate
c. 145*C generates a Hydraulic Overheat EICAS Warning message.
When the S.E Taxing (ENG 1 or 2) and the APU running, would both windshields
be heated? - ANSWER ✓ Yes. There would be normal windshield heating since
you have two sources of AC power.
When does the windshield heat perform it BIT? - ANSWER ✓ When a single AC
power is available (IDG) the corresponding windshield heat will heat for 120 sec
Can you have windshield heat in Flight with a single source AC? - ANSWER ✓
Yes but only the left windshield is heated, unless the left heating system fails, then
the right will be powered
When does the wind anti ice perform its test? - ANSWER ✓ a. Reaching 10000ft
AGL or ten minutes after takeoff, whichever is first
-EICAS message A-I WING VLV OPEN
- Synoptic page will indicate that the A-I valves have opened
, When are the Air Data Smart Probes and TAT probes heated? - ANSWER ✓
Whenever an engine is running or airborne
How are the Engine Cowls heated? - ANSWER ✓ Hot Bleed Air. 10th Stage
compressor section
How do you turn the Engine Anti-Ice on for Icing Conditions on the Ground (T/O)
- ANSWER ✓ Via the MCDU on the T/O data set menu
With ALL selected on the MCDU for ENG and WING Anti Ice, when will the
ENG and WING Anti-Ice come on? - ANSWER ✓ a. ENG: After engine start
b. Wing: Wheel speed greater then 40kts
In AUTO, when does the Ice Protection system function automatically? -
ANSWER ✓ After 1700 all or 2 minutes after takeoff (regardless of MCDU
setting)
What is the purpose of the Ice Detector(s)? - ANSWER ✓ They command the
ENG and WING Anti-Ice valves to open above 1700ft AGL or 2 minutes after
takeoff, once ice has been detected and stay open for 2 minutes after ice is no
longer detected
Does the Engine Bleed valve fail open or closed? - ANSWER ✓ Fail safe open if
either the electrical or pressure signal are not present
If the REF A/I Mode is set to OFF, when are the Anti-Ice valves inhibited? -
ANSWER ✓ until 1700 ft or 2 minutes after liftoff
What sources are used for airplane anti-icing and de-icing? - ANSWER ✓ a.
Bleed air heat
b. Electric heat
What uses bleed air for ice protection? - ANSWER ✓ a. Engine lips
b. 3 out board slats
What uses electric heat for ice protection? - ANSWER ✓ a. Pitot-static system
b. Windshields
c. Water lines
WITH CORRECT SOLUTIONS||100%
GUARANTEED PASS|| ALREADY A+
GRADED|||UPDATED 2026/2027
SYLLABUS||<<RECENT VERSION>>
E175 - Aircraft Limitations
Pax, min crew, capabilities - ANSWER ✓ Max pax - 76
(12 First Class, 64 Coach)
Min Crew - 2 (CA & FO)
Day & Night
IFR & VFR
Icing conditions
CAT I & CAT II
RVSM
What is the primary purpose of the PTU - ANSWER ✓ To allow landing gear
retraction (and extension?) in the event of an engine 2 or EDP failure
When will the PTU automatically activate? - ANSWER ✓ a. During takeoff and
landing if the engine 2 or EDP 2 fails
b. The PTU will be started if:
-Flaps not set to zero or LG not up and locked
-EDP 1 not failed
-Hydraulic reservoir 2 quantity above 12%
How is S.E. Taxi possible on ENG 1 if Nosewheel Steering is on HYD 2? -
ANSWER ✓ ACMP 2 will activate if engine 1 is running and the parking brake is
released.
,Parking brake set after taxi pump continues running for 6 minutes
What is the primary purpose of the HYD 3 system? - ANSWER ✓ Back up for
the flight controls
HYD ACMP 3A & B pump switch(s) are labeled ON and AUTO because? -
ANSWER ✓ -HYD ACMP 3A pump is primary and has no automation
- HYD ACMP 3B pump is back up and automatically activates if ACMP 3A fails
What, if any, HYD ACMP will function if the RAT is the only power source? -
ANSWER ✓ HYD ACMP 3A only
In an electrical emergency can HYD 3 system power requirements overload the
RAT? - ANSWER ✓ No, because a flow limiter valve is used to reduce flow and
limits pump electrical power draw to prevent RAT stall.
What is the hydraulic pressure during normal operation of the EDP(s)? -
ANSWER ✓ 3000 psi
Which System(s) power the Multifunction Spoiler PCU(s)? - ANSWER ✓ -
System 1: panels 2,3,4
-System 2: panels 1,5
1= inboard ground spoiler
2= outboard multifunction spoiler
Which system(s) power the Aileron PCU(s)? - ANSWER ✓ System 3: outboard
ailerons
System 2: inboard ailerons
Which system(s) power the Rudder PCU(s)? - ANSWER ✓ System 1: upper
rudder
System 2: lower rudder
Which system(s) power the Elevator PCU(s)? - ANSWER ✓ System 1: left hand
outboard
System 2: left and right inboard
System 3: right hand outboard
,Which Systems power the Brakes? - ANSWER ✓ System 1: outboard brakes
System 2: inboard brakes
Which hydraulic pump cannot be deferred? Why? - ANSWER ✓ a. Hydraulic
Pump 3a
b. Only one powered by AC ESS BUS during electrical emergency
What does the hydraulic shutoff button do when pressed on the overhead panel? -
ANSWER ✓ Closes the SOV, Isolates fluid from the Pump but down not shut it
down.
What is the hydraulic pressure during normal operations of the ACMP(s)? -
ANSWER ✓ 2700 psi
What overheat protection is provided for the hydraulic system? - ANSWER ✓ a.
100*C generates a Hight Temperature EICAS Caution message
b. 125*C shutoff valve will automatically actuate
c. 145*C generates a Hydraulic Overheat EICAS Warning message.
When the S.E Taxing (ENG 1 or 2) and the APU running, would both windshields
be heated? - ANSWER ✓ Yes. There would be normal windshield heating since
you have two sources of AC power.
When does the windshield heat perform it BIT? - ANSWER ✓ When a single AC
power is available (IDG) the corresponding windshield heat will heat for 120 sec
Can you have windshield heat in Flight with a single source AC? - ANSWER ✓
Yes but only the left windshield is heated, unless the left heating system fails, then
the right will be powered
When does the wind anti ice perform its test? - ANSWER ✓ a. Reaching 10000ft
AGL or ten minutes after takeoff, whichever is first
-EICAS message A-I WING VLV OPEN
- Synoptic page will indicate that the A-I valves have opened
, When are the Air Data Smart Probes and TAT probes heated? - ANSWER ✓
Whenever an engine is running or airborne
How are the Engine Cowls heated? - ANSWER ✓ Hot Bleed Air. 10th Stage
compressor section
How do you turn the Engine Anti-Ice on for Icing Conditions on the Ground (T/O)
- ANSWER ✓ Via the MCDU on the T/O data set menu
With ALL selected on the MCDU for ENG and WING Anti Ice, when will the
ENG and WING Anti-Ice come on? - ANSWER ✓ a. ENG: After engine start
b. Wing: Wheel speed greater then 40kts
In AUTO, when does the Ice Protection system function automatically? -
ANSWER ✓ After 1700 all or 2 minutes after takeoff (regardless of MCDU
setting)
What is the purpose of the Ice Detector(s)? - ANSWER ✓ They command the
ENG and WING Anti-Ice valves to open above 1700ft AGL or 2 minutes after
takeoff, once ice has been detected and stay open for 2 minutes after ice is no
longer detected
Does the Engine Bleed valve fail open or closed? - ANSWER ✓ Fail safe open if
either the electrical or pressure signal are not present
If the REF A/I Mode is set to OFF, when are the Anti-Ice valves inhibited? -
ANSWER ✓ until 1700 ft or 2 minutes after liftoff
What sources are used for airplane anti-icing and de-icing? - ANSWER ✓ a.
Bleed air heat
b. Electric heat
What uses bleed air for ice protection? - ANSWER ✓ a. Engine lips
b. 3 out board slats
What uses electric heat for ice protection? - ANSWER ✓ a. Pitot-static system
b. Windshields
c. Water lines
