Detailed Analysis of CRJ200 Aircraft Systems Homework

This document provides comprehensive solutions to a CRJ200 aircraft systems homework assignment. The assignment addresses several key aspects of aircraft operation, including the function of TOGA switches on the ground and in the air, the behavior of the autopilot in different modes, the significance of flight control panel light indications, and the procedures for normal autopilot disconnects. It also covers immediate action steps for an aileron jam, a discussion of primary and secondary flight controls, the Ground Lift Dumping (GLD) System, the pitch trim system, the continuous ignition system, engine oil checks, the NO STARTER CUTOUT caution message, and the impact of setting engine speed switches to OFF. The document offers detailed explanations and answers to each question, providing valuable insights into the CRJ200 aircraft's systems and operational procedures.

Q1)
What happens to the autopilot and flight director when the TOGA switches are pressed on the
ground? What happens to them when the TOGA switches are pressed in the air?
TOGA is an abbreviation of Turnoff Go-Around. TO/GA is a switch which is on the
autothrottle with both the takeoff (TO) and go-around (GA) modes. When on the ground and
the TOGA switches are pressed, the autopilot mode and flight director are able to engage.
The flight director comes alive at this moment and flaps retracting speed. When the TOGA is
pressed on and the plane is on the ground, the autopilot and flight director are able to set to
approach mode and then the go-around mode is activated. When on air, and TOGA is
pressed, the autopilot and flight director are able to activate the take off mode on the
autothrottle. This is able to increase the engine power.
Question 25 pts
If no specific modes are selected, when the autopilot is activated it will automatically engage
in _____ modes.
vertial speed and roll
pitch and roll
pitch and heading
speed and heading
Question 35 pts
What do the two lights on either side of the flight control panel buttons mean when they are
both illuminated?
Both Flight Control Computers (FCC) are online and detecting no failures.
The FCC's are online in lateral an vertical modes for the respective sub-mode.
Both Attitude and Heading Reference System (AHRS) computers are nominal.
Both pilots are awake with the autopilot engaged.
Question 45 pts
Which of the following represents a normal autopilot disconnect?
Stabilizer trim is operated
One FCC fails
Yaw damper disconnect switch is pressed
Both yaw dampers fail

Question 125 pts
What are the immediate action item steps that should be taken if you encounter an aileron
jam?
When the aileron jam is experienced, the first action which needs to be taken is the pulling of
the circuit breaker from the memory. Next, the stabilizers trim runaway need to be done to
the crew through the pulling of the two circuit breakers. The next key step is to rudder which
is used to enhance the smoothly control of the roll. The next step is engaging the landing gear
into safe indicator (that is gear not downlocked). This is done when the main landing gear is
not engaged. The ailerons are aerodynamically balanced through the use of an offset hinge
line. In addition, the ailerons are connected to the cockpits wheels through a series of cables,
bellcranks and carbon fibre rods. Checking the cockpit connections is another key step which
needs to be taken after aileron jams are experienced.
Question 225 pts
What are the primary and secondary flight controls on the CRJ200 and what type of
The major flight controls on the CRJ200 include Ailerons, rudder, elevators, and spoilerons.
On the other hand, secondary flight controls on CRj200 include Flight spoilers, ground
spoilers (inboard and outboard), inboard and outboard flaps, rudder trim, horizontal stab trim,
and aileron trim. All these controls help in proper flights with the primary ones playing key
roles in flights while the secondary ones are supporting the primary controls.
Question 35 pts
What controls the Ground Lift Dumping (GLD) System, not just the activation of the panels
themselves?
The Proximity Sensing Electronic Unit (PSEU)
The mechanical linkage to the flight spoilers
The spoiler electronic control unit (SECU)
The Attitude and Heading Reference System (AHRS)
Question 45 pts
Which is the correct order of priority for the pitch trim system?
Manual Trim, Autopilot, Mach Trim, Auto Trim
Manual Trim, Autopilot, Electric Trim, Override Trim
Manual Trim, Autopilot, Auto Trim, Mach Trim
Auto Trim, Autopilot, Mach Trim, Manual Trim

Question 19 pts
In what condition will the Continuous Ignition system automatically activate?
During an abnormal start.
When an engine fails.
When the Ice Detection System detects icing conditions.
When an impending stall is detected by the stall protection computer.
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Question 29 pts
The engine oil tank level must be checked periodically. During what time interval must this
be done to ensure accurate readings?
within three minutes to two hours after engine shutdown
there is no interval, but the engines must be shutdown
within three hours after engine shutdown
within three minutes after engine start
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Question 39 pts
What does it mean when the NO STARTER CUTOUT Caution Message Displays and what
does the QRH instruct the crew to do as a corrective action?
The Air Turbine Starter is in an overspeed condition and
the QRH will instruct the crew to discharge the halon fire
suppression on the affected engine.
The APU Load Control Valve has failed to close after engine start.
The Crew will be instructed by the QRH to manually close the APU Load Control Valve.
The Air Turbine Starter Valve has failed to close.
The QRH will tell the Crew to press the Stop button on the Start Control Panel to manually close the V
The Air Conditioning Packs are on and the Air Turbine Starter is not getting enough
Bleed Air for Engine Start. The QRH tells the Crew to turn the Packs Off.
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Question 49 pts
What will happen to the engines if the speed switches on the engine control panel are set to
the OFF position when the thrust lever is above 79% N1.
The engines may quit since fuel flow is metered electronically above 79% N1.
This will chime the flight attendant.
This will cause a rapid increase of N2 speed and may cause the engine
RPM and temperature to exceed normal limits.
Nothing as long as the auto-throttles are off.
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Question 59 pts
Why must the engines be operated at idle for 2 minutes prior to shutdown?
to allow the FMS to re-calibrate the aircraft's position There is no such requirement
To allow internal engine temperatures to stabilize
to insure that the auto-spoilers have time to retract