Week 2 Day 2 Flashcards
Is there a mechanical disconnect for the rudder control pedals?
No
Which spoilers move to provide roll assist?
Mid and outboard on down going wing
Control wheel movement for ailerons is limited to what degree of movement left and right? Where is this set?
- 60 degrees
- primary stops In the aileron control modules
- secondary mechanical stops in control wheel set at 65 degrees
What does the feel and centering unit do in the control system?
- Provides artificial feel to the pilot
- returns the control wheel to the neutral position
At what force does the aileron force sensor disconnect the AP?
> 15lb force
What is the aileron control override pushrod breakout force?
15-18 lbs of force
How does the FCC command the aileron/elevator positions in the event of the control wheel/control column jam?
Average of the two inputs
When the control wheels are offset from each other, what amber CAS message is generated?
ROLL CONTROL MISCOMPARE
What do the aileron and elevator dampers do?
- Minimises control wheel and column oscillations
- provides artificial feel proportional to control input
Where are the roll autopilot servos?
Left of the control modules
Where are the autopilot pitch servos?
Right side of the control modules
At what force does the elevator force sensor disconnect the AP?
> 25 lbs force
What is the the elevator control override pushrod breakout force? (Mechanical jam)
40-48 lbs of force
Is reset of the override pushrods automatic?
Yes
What do stick shaker motors provide?
indication of impending stall condition (AOA limiting)
How many stick shaker motors are installed?
Two - one on each control column
Which FCC controls which stick shakers?
Onside (FCC1 to stick shaker 1)
At what AOA will stick shakers activate?
0.85 max AOA
Where is the rudder CMA located?
Behind the #2 and #3 DU’s
How many inches of rudder pedal adjustment do you have?
8 inches
Do the pilots force sensor pushrods disconnect AP?
No, purely report to FCC
Does the AP system have interaction with the yaw system?
No, no yaw servos
Why are the trim control switches two part switches?
To prevent accident switch actuation
- one switch provides power to motor
- one switch provides the ground
What is aileron trim limited to in degrees?
30 degrees left and right of centre
When trim is input to the aircraft, is there visual indication in the control wheels?
Yes the control wheels move, unless ROLL MOTOR CONTROL switch off
What powers flight control trimming?
Essential 28V DC
If you have a roll trim runaway, what can you do?
Press ROLL MOTOR CONTROL switch to OFF
If ROLL MOTOR CONTROL switch is OFF, where does the input go to instead of the roll trim motor?
Direct to FCC
What is the maximum rudder trim movement either side of centre?
19 degrees
Will rudder pedals move with rudder trim input?
No
How do you centre the rudder trim within 5 seconds?
AUTO CENTER button
Which spoilers are used for roll augmentation in normal augmentation?
Mid and outboard
Which spoilers are used in EB mode?
Outboard only
What is full spoiler range of movement?
55 degrees trailing edge up
What degree of spoiler deployment do we get for speed brake in flight?
30 degree trailing edge up
An EHSA has how many LVDT’s? Where do they report to?
- 1
- the REU
An EBHA has how many LVDT’s? Where do they report to?
- 2
- one reports to the REU
- one reports to the MCE
What will happen when I moved the speed brake handle out of the detent above 90% throttle?
- Speed brake auto retract
- AMBER CAS message
When do you get a red GROUND SPOILER CAS message?
When all auto deploy conditions are true but the spoilers are not commanded to deploy
What are the ground spoiler auto arming requirements?
- ground spoiler switch ARM
- throttles at idle
- L&R WOW on ground
- flaps 39
- wheel speed >47 knots
What does elevator offload do?
Removes load from elevator during pitch trim
What do CLAWS do?
Prevent movement outside of safe flight parameters for current aircraft configuration
Whilst the REU’s report and receive information from the FCC, the MCE’s only _______ information
Receive
The elevator stand alone LVDT reports to the EHSA. What is the reason for this stand alone LVDT?
Redundancy. Pitch control is critical
How many CMA’s are there in total?
- 3
- pilot and copilot (both do pitch and roll)
- rudder
What is max degree of spoiler deployment for roll assist?
55 degrees
How do you deploy speed brakes if auto deployment doesn’t happen?
Speed brake handle
What is aileron full range of travel?
- 19 degrees TEU
- 11 degrees TED
What is elevator full range of travel?
- 24 degrees TEU
- 13 degrees TED
What is rudder full range of travel?
- 25 degrees left and right
What degree to flaps have to be at to remove/install flap resolver? What degree for rigging?
- 39 degrees for remove/install
- 0 degrees for rigging
What degree of split do you get a flap asymmetry?
- 4 degrees
How many torque tubes in each wing’s flap well?
8 torque tubes
How many pillow blocks connect the flap rods in each wing flap well? What do they compensate for?
- 6
- wing flex
Why does flap handle gate switch #1 report to the BFCU?
For high and low speed gain CLAWS
What do you have to do if you find flap PDU ecology bottle 50% full on a preflight?
Empty and check after next flight
What does the flap actuator no back function do?
Prevents unwanted retraction
Where is the flap no back function located?
Internal to actuator. Must replace actuator if fault found
What trim switch do you use when rigging the stab?
Back up trim switch
Which HSCU channel is in control?
Swaps on each power cycle
What are the mechanical and electrical stop values for the HSTA?
Mechanical - 1.0 LEU - 11.0 LED Electrical - 0.5 LEU - 10.5 LEU
The HSCU has an internal ___ for DC output to the HSTA motor. What is the voltage?
- TRU
- 270 volts
What state are the HSTA brakes in when energised?
Off
How many position resolvers provide HSTA position to the HSCU?
2
What can you do if the HSTA no back brake is US?
Change the actuator. Internal to the actuator so no action possible
