ALM 388 - UNIT III EXAM QUESTIONS
WITH COMPLETE ANSWERS
An Inertial Reference System must go through a start-up procedure to establish an
initial reference point. Which of the following statements is true concerning this start-
up process? - Answer-The start-up process is called initialization and is performed
with the aircraft motionless
How many laser gyros are contained in a typical Inertial Reference Unit (IRU)? -
Answer-Three
Pneumatic Servos would typically be found on what type of aircraft? - Answer-Light
single engine aircraft
What is the name of the LRU used to love flight control surfaces in accordance with
autopilot command signals? - Answer-Electric servo
What is the purpose of the clutch mechanism found on control surface servos? -
Answer-To allow the pilot to manually override the servo
Which aircraft employs hybrid Serbia that combine hydraulic actuators and electric
drive motors? - Answer-Both B and C
What are the two common systems used to generate a feedback signal that informs
the autopilot of control surface movement? - Answer-A.C. synchros and differential
transducers
What device is most likely used to measure the rotational position of an aircraft
control surface? - Answer-An RVDT
Which of the following statements is true concerning differential transducers? -
Answer-Differential transducers are a mutual inductive device with a primary winding
and two secondary windings
How is the output signal changed as the rotary voltage differential transducers
changes direction of travel? - Answer-The output voltage changes
What type of aircraft would typically employ the Collins APS-85 autopilot system? -
Answer-Corporate aircraft
Which of the following units is typically used to measure the rotational speed of an
electric servomotor and provide feedback to the autopilot computer? - Answer-Tach
generator
How many channels are used by the Flight Control Computer (FCC) on the APS-85
autopilot? - Answer-Two
, The Attitude Heading Computer (AHC) in the Collins AHS-85 measured angular
rates and accelerations using which of the following? - Answer-Piezoelectric sensors
Which of the following statements is true concerning flight director systems? -
Answer-all of the above
How often must pitot/static leak test be performed according to FAR 91.411 Part 43,
Appendix E? - Answer-Every 24 months
On the Embraer Phenom aircraft how often must the autopilot servos be cleaned and
greased? - Answer-Every 1,000 flight hours or three years
When flying in U.S. airspace, what mode transponder must be tested in accordance
with FAR 91.411 and 91.413, Appendix F to ensure accurate altitude reporting? -
Answer-Mode S
Which of the following does NOT interface with the Boeing 747-400 Inertial
Reference System (IRS)? - Answer-Attitude Heading Reference System (AHRS)
Which of the following are all functions of the Boeing 747-400 Flight Management
System (FMS)? - Answer-Automatic radio tuning, lateral and vertical navigation,
thrust management, and the display of flight plan maps
On the Boeing 747-400, the flight management system can be accessed from how
many different Control Display Units (CDU)? - Answer-Three
What LRU on the B-747-400 flight management system is used to input
preprogrammed navigational parameters, such as flight routes, waypoints, and
airport data. - Answer-The data loader
On the B-747-400, what is the purpose of the auto throttle trimming system? -
Answer-A fine thrust adjustment to equalize the thrust of all four engines.
What is the only warning message displayed by the Boeing 747-400 EICAS related
to the aircraft's flight management/auto flight system? - Answer-A/P DISCONNECT
The yaw damper system is designed to prevent which undesirable flight
characteristic? - Answer-Structural modal oscillations
What does the EICAS Maintenance computer store on the 757? - Answer-Manual,
Auto Event and Real-time
What does the MCDP on the 757 do? - Answer-BITE tests the Autopilot sys
What three major Autopilot sys are BITE tested on the 757? - Answer-FMC, FCC
and TMC
How many Flight legs are stored on the 757? - Answer-10
How many MCPP are on the 757? - Answer-1
WITH COMPLETE ANSWERS
An Inertial Reference System must go through a start-up procedure to establish an
initial reference point. Which of the following statements is true concerning this start-
up process? - Answer-The start-up process is called initialization and is performed
with the aircraft motionless
How many laser gyros are contained in a typical Inertial Reference Unit (IRU)? -
Answer-Three
Pneumatic Servos would typically be found on what type of aircraft? - Answer-Light
single engine aircraft
What is the name of the LRU used to love flight control surfaces in accordance with
autopilot command signals? - Answer-Electric servo
What is the purpose of the clutch mechanism found on control surface servos? -
Answer-To allow the pilot to manually override the servo
Which aircraft employs hybrid Serbia that combine hydraulic actuators and electric
drive motors? - Answer-Both B and C
What are the two common systems used to generate a feedback signal that informs
the autopilot of control surface movement? - Answer-A.C. synchros and differential
transducers
What device is most likely used to measure the rotational position of an aircraft
control surface? - Answer-An RVDT
Which of the following statements is true concerning differential transducers? -
Answer-Differential transducers are a mutual inductive device with a primary winding
and two secondary windings
How is the output signal changed as the rotary voltage differential transducers
changes direction of travel? - Answer-The output voltage changes
What type of aircraft would typically employ the Collins APS-85 autopilot system? -
Answer-Corporate aircraft
Which of the following units is typically used to measure the rotational speed of an
electric servomotor and provide feedback to the autopilot computer? - Answer-Tach
generator
How many channels are used by the Flight Control Computer (FCC) on the APS-85
autopilot? - Answer-Two
, The Attitude Heading Computer (AHC) in the Collins AHS-85 measured angular
rates and accelerations using which of the following? - Answer-Piezoelectric sensors
Which of the following statements is true concerning flight director systems? -
Answer-all of the above
How often must pitot/static leak test be performed according to FAR 91.411 Part 43,
Appendix E? - Answer-Every 24 months
On the Embraer Phenom aircraft how often must the autopilot servos be cleaned and
greased? - Answer-Every 1,000 flight hours or three years
When flying in U.S. airspace, what mode transponder must be tested in accordance
with FAR 91.411 and 91.413, Appendix F to ensure accurate altitude reporting? -
Answer-Mode S
Which of the following does NOT interface with the Boeing 747-400 Inertial
Reference System (IRS)? - Answer-Attitude Heading Reference System (AHRS)
Which of the following are all functions of the Boeing 747-400 Flight Management
System (FMS)? - Answer-Automatic radio tuning, lateral and vertical navigation,
thrust management, and the display of flight plan maps
On the Boeing 747-400, the flight management system can be accessed from how
many different Control Display Units (CDU)? - Answer-Three
What LRU on the B-747-400 flight management system is used to input
preprogrammed navigational parameters, such as flight routes, waypoints, and
airport data. - Answer-The data loader
On the B-747-400, what is the purpose of the auto throttle trimming system? -
Answer-A fine thrust adjustment to equalize the thrust of all four engines.
What is the only warning message displayed by the Boeing 747-400 EICAS related
to the aircraft's flight management/auto flight system? - Answer-A/P DISCONNECT
The yaw damper system is designed to prevent which undesirable flight
characteristic? - Answer-Structural modal oscillations
What does the EICAS Maintenance computer store on the 757? - Answer-Manual,
Auto Event and Real-time
What does the MCDP on the 757 do? - Answer-BITE tests the Autopilot sys
What three major Autopilot sys are BITE tested on the 757? - Answer-FMC, FCC
and TMC
How many Flight legs are stored on the 757? - Answer-10
How many MCPP are on the 757? - Answer-1
