Flight Controls Flashcards
What are the primary flight controls?
ailerons, elevators and rudder
What powers the primary flight controls?
The flight controls are powered by redundant hydraulic sources; system A and system B.
Which flight controls can be operated manually if required?
ailerons and elevators may be operated manually if required.
What will power the rudder if hydraulic Loss of System A and B are not available?
The rudder may be operated by the standby hydraulic system if system A and system B pressure is not available.
Do you have the yaw damper during manual reversion?
Yes - standby yaw damper
With a lateral system jam, which crew member controls ailerons and/or spoilers
If the First Officer’s control wheel is jammed, force applied to the Captain’s control wheel provides roll control from the ailerons. The spoilers and the First Officer’s control wheel are inoperative.
How can you isolate a jammed elevator?
Applying force against the jam will breakout either the Captain’s or First Officer’s control column. Whichever column moves freely after the breakout can provide adequate elevator control.
When would you use the Elevator Jam Landing Assist and what does it do?
If a jam occurs in the aft elevator control mechanism, both control columns have a limited range of motion. During approach and landing, the Elevator Jam Landing Assist System uses the flight spoilers for small changes to the flight path.
What powers the stabilizer?
The horizontal stabilizer is positioned by a single electric trim motor controlled through either the stab trim switches on the control wheel or autopilot trim. The stabilizer may also be positioned by manually rotating the stabilizer trim wheel.
Are the manual trim and electric trim limits the same?
Yes
If Stab Trim Primary and Stab Trim Back-Up are activated do you still have manual trim?
YES
At what speed does the Mach Trim System become operative?
Mach .615
Is the STS operating when the pilot is making stab trim commands with the switches?
NO
What powers the secondary flight controls?
System B
Describe the LE / TE Flap/ Slat sequence
When the FLAP lever is moved from the UP position to the 1, 2, 5, 10, 15, or 25 position, the TE flaps extend to the commanded position and the LE:
• flaps extend to the full extended position and
• slats extend to the extend position.
When the FLAP lever is moved beyond the 25 position the TE flaps extend to the commanded position and the LE:
• flaps remain at the full extended position and
• slats extend to the full extended position.i
How are the flaps protected from overspeed and excessive air loads?
Flap load relief
If we lose hydraulic System B, how are the trailing edge devices operated?
Alternate flap extension via PTU
How are the leading-edge devices extended with loss of Hydraulic System B and can they
be retracted?
When using alternate flap extension the LE flaps and slats are driven to the full extended position using power from the standby hydraulic system. In this case the ALTERNATE FLAPS master switch energizes the standby pump and the ALTERNATE FLAPS position switch, held in the down position momentarily, fully extends the LE devices.
Can’t be retracted
Is there skew or asymmetry protection in the TE flaps when operating using the Alternate
Flap System?
NO
What is different in the deflection of the flight spoilers during an emergency descent and
when does it arm?
EDS is armed when the airplane is above 30,000 feet and the cabin altitude warning is active. Moving the speedbrake lever activates the function. When activated, the EDS raises the speedbrakes to a higher than normal position when the speedbrake lever is in the flight detent.
In the air, when will the SPEEDBRAKES EXTENDED light illuminate?
the light illuminates to warn the crew that the speed brakes are extended while in the landing configuration or below 800 feet AGL. It also illuminates if the speedbrakes are extended and the thrust levers are greater than idle for 15 seconds, or a thrust lever is greater than approximately 40 degrees for 3 seconds
What is the purpose of the Landing Attitude Modifier (LAM)?
To maintain acceptable nose landing gear contact margin, LAM symmetrically deploys flight spoilers on approach to reduce lift and force the airplane to use a higher angle of attack.
If landing, or with a RTO with spoilers in the DOWN detent, will the Auto Speed Brake
system operate?
- main landing gear wheels spin up (more than 60 kts)
- both thrust levers are retarded to IDLE
- reverse thrust levers are positioned for reverse thrust.
