1 | Page
CRJ550 Systems Exam Questions and
Correct Answers
________ is the minimum air temperature in flight. Ans: -70
degrees C
The maximum air temperature for takeoff is ________. Ans: ISA
+35 degrees C
The maximum speed for turbulent air penetration is________,
whichever is lower. Ans: 280 KIAS/.75 Mach
________ is the maximum tailwind component for takeoff. Ans: 10
knots
________ is the maximum tailwind component for landing. Ans: 10
knots
The minimum amount of pavement required to complete a 180
degree turn is ________ Ans: 75 feet
HALF BANK limits the maximum bank angle commanded by the
Flight Director to? Ans: 15 degrees
In PITCH mode, one click of the VS wheel changes the pitch
reference by how much? Ans: 1/2 degree
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, 2 | Page
SPEED mode causes the Flight Director to command a pitch
attitude that will do what? Ans: Maintain the selected airspeed
The roll limit is reduced to half the normal value when the
________ mode is selected. Ans: 1/2 BANK
In ________ mode, the pitch reference changes by 1/2 degree with
each click of the VS wheel. Ans: PITCH
In ______ mode, the pitch attitude commanded by the Flight
Director will maintain the selected airspeed. Ans: CLB
PITCH
Both 1 and 2
Among other things, pressing either TOGA switch does what when
airborne? Ans: Disconnects the autopilot
The minimum altitude to engage the autopilot is ________. Ans:
600 feet AGL
When airborne, pressing the ______ switch turns on both Flight
Directors and disengages the autopilot. Ans: TOGA
At what RPM will the APU starter cut out? Ans: 46%-60%
The APU start sequence may be attempted ______ in one hour with
_____ between starts. Ans: 3 times, 2 minutes
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, 3 | Page
Upon detecting an APU fire in flight, the APU automatic fire
protection will _______. Ans: Shut down the APU but will not
discharge the fire bottle
The APU fire protection system consists of how many fire bottles?
Ans: 1
From where is fuel obtained for the APU? Ans: Left collector tank
If the APU electric fuel pump fails while the APU is running the
APU will ________, Ans: Continue to run but it will not start once it
is shutdown
The primary purpose of the APU is to provide what? Ans: 115
volts AC electrical power
The APU is started using __________. Ans: A DC starter motor
_______ is the maximum altitude for starting the APU. Ans: 37,000
feet pressure altitude
For what is APU bleed air used? Ans: Engine starting and
environmental control
________ is the maximum altitude for using APU bleed air. Ans:
25,000 feet pressure altitude
© 2025 All rights reserved
CRJ550 Systems Exam Questions and
Correct Answers
________ is the minimum air temperature in flight. Ans: -70
degrees C
The maximum air temperature for takeoff is ________. Ans: ISA
+35 degrees C
The maximum speed for turbulent air penetration is________,
whichever is lower. Ans: 280 KIAS/.75 Mach
________ is the maximum tailwind component for takeoff. Ans: 10
knots
________ is the maximum tailwind component for landing. Ans: 10
knots
The minimum amount of pavement required to complete a 180
degree turn is ________ Ans: 75 feet
HALF BANK limits the maximum bank angle commanded by the
Flight Director to? Ans: 15 degrees
In PITCH mode, one click of the VS wheel changes the pitch
reference by how much? Ans: 1/2 degree
© 2025 All rights reserved
, 2 | Page
SPEED mode causes the Flight Director to command a pitch
attitude that will do what? Ans: Maintain the selected airspeed
The roll limit is reduced to half the normal value when the
________ mode is selected. Ans: 1/2 BANK
In ________ mode, the pitch reference changes by 1/2 degree with
each click of the VS wheel. Ans: PITCH
In ______ mode, the pitch attitude commanded by the Flight
Director will maintain the selected airspeed. Ans: CLB
PITCH
Both 1 and 2
Among other things, pressing either TOGA switch does what when
airborne? Ans: Disconnects the autopilot
The minimum altitude to engage the autopilot is ________. Ans:
600 feet AGL
When airborne, pressing the ______ switch turns on both Flight
Directors and disengages the autopilot. Ans: TOGA
At what RPM will the APU starter cut out? Ans: 46%-60%
The APU start sequence may be attempted ______ in one hour with
_____ between starts. Ans: 3 times, 2 minutes
© 2025 All rights reserved
, 3 | Page
Upon detecting an APU fire in flight, the APU automatic fire
protection will _______. Ans: Shut down the APU but will not
discharge the fire bottle
The APU fire protection system consists of how many fire bottles?
Ans: 1
From where is fuel obtained for the APU? Ans: Left collector tank
If the APU electric fuel pump fails while the APU is running the
APU will ________, Ans: Continue to run but it will not start once it
is shutdown
The primary purpose of the APU is to provide what? Ans: 115
volts AC electrical power
The APU is started using __________. Ans: A DC starter motor
_______ is the maximum altitude for starting the APU. Ans: 37,000
feet pressure altitude
For what is APU bleed air used? Ans: Engine starting and
environmental control
________ is the maximum altitude for using APU bleed air. Ans:
25,000 feet pressure altitude
© 2025 All rights reserved
