ATA 22 B737NG Type Course
Study online at https://quizlet.com/_ey0nln
1. Altitude alert is what? A signal that is sent to the REU to bring a tone when the a/c is
approaching or leaving MCP selected altitude
2. Speed trim only operates Autopilot is off
when?
Low-speed, high-thrust flight
3. Speed trim gives nose A/C is Slow
down in what condition?
A/C is Fast
Gives nose up in what
condition?
4. What are the associat- Master Caution and FLT CONT
ed warning lights with a
Dual Channel Speed or
Mach trim fail?
5. Where are the FCC pro- E1 rack
gram switch modules?
6. Which control surface is The horizontal stabilator
affected by speed trim?
7. FCC sends commands to Mach trim actuator
what for mach trim?
Moves the Elevator via the Elevator Feel and Centering Unit
8. During take off, mach Down, allowing the stabiliser to trim more nose up
trim will give elevator
position ______ allowing
what?
9. Right side of Elevator Feel and Centering Unit
, ATA 22 B737NG Type Course
Study online at https://quizlet.com/_ey0nln
Where is the Neutral Shift
Sensor?
10. The pitch CWS force At the base of each control column
transducer is where?
11. Where is the aileron posi- Wheel well, between A/P actuators and aileron PCU's
tion sensor?
12. Where are the spoiler po- Rear wing spars, below spoilers 4 and 9
sition sensors?
13. Why might a valid FCC fail C/B's not closed in correct sequence
the power-up test?
Causes FCC to do AIR power-up
Close AFCS A(B) FCC DC circuit breaker LAST
14. How short can the power Less than 40 msec
interruption to the DFCS
be, and not have any ef- 40 msec-7 seconds - A/P disengages but other modes continue to
fect in the modes or out-
>7 seconds - DFCS re-initialises
put?
What happens over this
time?
15. Where are the FCC's pow- On-side DC buses (28VDC)
ered from?
16. Why does the IFSAU For FCC's as a reference voltage for CWS force transducers and flap
transform 115Vac to position transmitters
26Vac?
, ATA 22 B737NG Type Course
Study online at https://quizlet.com/_ey0nln
17. The roll CWS force trans- Below the captains control column
ducer is located where?
18. Do you lose FD modes, No, but after 7 seconds the FCC will re-initialise
trim functions and warn-
ings in a power transient
below 7 seconds?
19. CWS force transducers Both, whereas the flap transmitter transformer only supplies the on-
excitation power is sup- side
plied by which of the IF-
SAU transformers?
20. What is the pitch and roll 14Vac, 1800Hz
excitation power supply
to the A/P actuators from
the FCC's?
21. What causes A/P to disen- The stabilizer trim relay interrupts power to the FCCs when a manual
gage as a result of elec- trim input is operated causing disconnect
tric control wheel trim in-
put when the A/P is en-
gaged?
22. Which 3 sensors do the Roll - Spoiler 4 and 9 sensor, Aileron position sensor
FCC's supply roll excita-
tion power to? Pitch - Neutral Shift sensor, Elevator surface position sensor
Which 2 sensors do the
FCC's supply pitch excita-
tion power to?
, ATA 22 B737NG Type Course
Study online at https://quizlet.com/_ey0nln
23. How are the FCCs elec- The IFSAU removes the ground from the Bus Tie Relay
trically isolated from ea-
chother in glideslope Disconnects each side of the electrical system
mode?
24. Glideslope capture isola-
tion logic
25. Why does the auto 28VDC sent when wheels spin up during landing, and wheelspeed is
speedbrake module have >60 knots
an input into the FCC's?
FCC's use signal to DISENGAGE A/P if a G/A starts after touchdown
26. What 2 components 1. Main electric stabiliser trim relay
do the ISFAU isolation
diodes let engage inter- 2. A/P stabiliser trim cutout relay
lock power go to?
27. When the manual sta- Power does NOT reach the FCC - A/P disengages
biliser electric trim switch
is operated, and the trim A/P stabiliser trim cutout relay also stops FCC power and A/P
relay energises, what
happens to the FCC send
A/P?
What other relay causes
the same condition?
28. What provides the power 28VDC from the Sw Hot Batt Bus
for the A/P warning cir-
cuits?
Study online at https://quizlet.com/_ey0nln
1. Altitude alert is what? A signal that is sent to the REU to bring a tone when the a/c is
approaching or leaving MCP selected altitude
2. Speed trim only operates Autopilot is off
when?
Low-speed, high-thrust flight
3. Speed trim gives nose A/C is Slow
down in what condition?
A/C is Fast
Gives nose up in what
condition?
4. What are the associat- Master Caution and FLT CONT
ed warning lights with a
Dual Channel Speed or
Mach trim fail?
5. Where are the FCC pro- E1 rack
gram switch modules?
6. Which control surface is The horizontal stabilator
affected by speed trim?
7. FCC sends commands to Mach trim actuator
what for mach trim?
Moves the Elevator via the Elevator Feel and Centering Unit
8. During take off, mach Down, allowing the stabiliser to trim more nose up
trim will give elevator
position ______ allowing
what?
9. Right side of Elevator Feel and Centering Unit
, ATA 22 B737NG Type Course
Study online at https://quizlet.com/_ey0nln
Where is the Neutral Shift
Sensor?
10. The pitch CWS force At the base of each control column
transducer is where?
11. Where is the aileron posi- Wheel well, between A/P actuators and aileron PCU's
tion sensor?
12. Where are the spoiler po- Rear wing spars, below spoilers 4 and 9
sition sensors?
13. Why might a valid FCC fail C/B's not closed in correct sequence
the power-up test?
Causes FCC to do AIR power-up
Close AFCS A(B) FCC DC circuit breaker LAST
14. How short can the power Less than 40 msec
interruption to the DFCS
be, and not have any ef- 40 msec-7 seconds - A/P disengages but other modes continue to
fect in the modes or out-
>7 seconds - DFCS re-initialises
put?
What happens over this
time?
15. Where are the FCC's pow- On-side DC buses (28VDC)
ered from?
16. Why does the IFSAU For FCC's as a reference voltage for CWS force transducers and flap
transform 115Vac to position transmitters
26Vac?
, ATA 22 B737NG Type Course
Study online at https://quizlet.com/_ey0nln
17. The roll CWS force trans- Below the captains control column
ducer is located where?
18. Do you lose FD modes, No, but after 7 seconds the FCC will re-initialise
trim functions and warn-
ings in a power transient
below 7 seconds?
19. CWS force transducers Both, whereas the flap transmitter transformer only supplies the on-
excitation power is sup- side
plied by which of the IF-
SAU transformers?
20. What is the pitch and roll 14Vac, 1800Hz
excitation power supply
to the A/P actuators from
the FCC's?
21. What causes A/P to disen- The stabilizer trim relay interrupts power to the FCCs when a manual
gage as a result of elec- trim input is operated causing disconnect
tric control wheel trim in-
put when the A/P is en-
gaged?
22. Which 3 sensors do the Roll - Spoiler 4 and 9 sensor, Aileron position sensor
FCC's supply roll excita-
tion power to? Pitch - Neutral Shift sensor, Elevator surface position sensor
Which 2 sensors do the
FCC's supply pitch excita-
tion power to?
, ATA 22 B737NG Type Course
Study online at https://quizlet.com/_ey0nln
23. How are the FCCs elec- The IFSAU removes the ground from the Bus Tie Relay
trically isolated from ea-
chother in glideslope Disconnects each side of the electrical system
mode?
24. Glideslope capture isola-
tion logic
25. Why does the auto 28VDC sent when wheels spin up during landing, and wheelspeed is
speedbrake module have >60 knots
an input into the FCC's?
FCC's use signal to DISENGAGE A/P if a G/A starts after touchdown
26. What 2 components 1. Main electric stabiliser trim relay
do the ISFAU isolation
diodes let engage inter- 2. A/P stabiliser trim cutout relay
lock power go to?
27. When the manual sta- Power does NOT reach the FCC - A/P disengages
biliser electric trim switch
is operated, and the trim A/P stabiliser trim cutout relay also stops FCC power and A/P
relay energises, what
happens to the FCC send
A/P?
What other relay causes
the same condition?
28. What provides the power 28VDC from the Sw Hot Batt Bus
for the A/P warning cir-
cuits?
