Flight Controls Flashcards
What is the Difference between Normal mode and Direct Mode?
Direct Mode removes the FCM and there are no higher level functions
Will speed brakes/ground spoilers work in Direct Mode?
No
Flight modes on the aircraft are?
Direct Mode and Normal Mode
The Roll Control system includes:
Ailerons and multi-function spoilers.
When the ELEVATOR is in Direct mode, the autopilot is unavailable. true/false
true
What is allowable takeoff trim?
green band on Trim EICAS
What do you lose when you go into direct mode?
Higher level functions of those flight controls
Can FCM Override pilot input?
no. The pilot always has control, the FCM augment (Increase, or enhance) pilot input thru higher level functions
Elevator Higher level functions?
Gain on Airspeed
Elevator thrust compensation
AOA imiting
In general terms what is direct mode?
The flight controls do not have Higher level functions, FCM is removed.
What are 3 FLIGHT CONTROLS MODE Buttons? what happens when they are pushed?
these are the flight controls that have higher level functions provided by the FCM, these buttons can be pushed in or out to disconnect FCM and thus higher level functions.
Would Loss of Airspeed data cause the flight controls to go into Direct Mode?
YES
Can the pilot select Direct mode?
yes by pushing in any Flight control mode button.
Will multifunction spoilers operate in direct mode?
only for ROLL
Is angle of attack limiting available in Direct mode?
NO
What is priority for the Trim?
Backup, captain, FO, FCM (auto trim) commands
The trim system is protected from a runaway by:
a 3 second timer that limits trim activator for more than 3 seconds.
What happens if only half of the respective trim switch is pressed for more that 5 seconds?
The switch is Deactivated… EICAS message “PITCH TRIM SW FAIL” aural warning “TRIM”
Which controls use Electric power instead of hydraulic power to actuate?
Horizontal stabilizer, flaps and slats
What two flap/slat positions have the same exact flap/slat positions
4 and 5
What is the difference between flap 4 and 5?
Flap 4 inhibits the landing gear aural warning on landing and flaps 5 does not.
What is normal flap/slat position for landing?
Flaps/slats 5 o FULL
When will speedbrakes automatically close, even if the level shows deployed?
180kts with flaps greater than or equal to 2, or high TLA
Which takeoff flap settings are approved?
1, 2 or 4