09 - Flight Controls Flashcards
FLIGHT CONTROLS
- Which hydraulic system(s) can power all primary flight controls?
A and/or B
FLIGHT CONTROLS
- How are the primary flight controls operated in manual reversion?
With the loss of hydraulic system A and B, the ailerons and elevators are operated manually and the rudder is operated using the standby hydraulic system.
The FLT CONTROL switches are used to remove hydraulic power from the flight controls and/or to activate the standby rudder PCU.
No spoilers are available in Manual reversion.
FLIGHT CONTROLS
- Which hydraulic system(s) power the trailing edge flaps and leading edge devices?
Normally, hydraulic system B.
If system B fails, LEDs are operated by the standby hydraulic system and the TE flaps are operated using an electric motor
FLIGHT CONTROLS
- How is roll controlled with a jammed aileron?
Force applied to the First Officer’s control wheel provided roll control from the spoilers
FLIGHT CONTROLS
- How is pitch controlled with a jammed elevator?
an override mechanism allows the control columns to be physically separated from one another. Applying force against the jam will breakout either the Captain’s or First Officer’s control column, freeing one to provide adequate elevator control.
FLIGHT CONTROLS
- What does the illumination of the SPOILERS light indicate?
The SCE unit has identified a spoiler system fault
FLIGHT CONTROLS
- What happens when placing a FLT CONTROL switch to STBY RUD?
• activates the standby hydraulic system pump
- opens the standby rudder shutoff valve to pressurize the standby rudder power control unit
- Deactivates FLT CONTROL LOW PRESSURE light
- Arms STANDBY HYD LOW PRESSURE light
FLIGHT CONTROLS
- How is the Elevator Jam Landing Assist activated?
-ELEVATOR JAM LANDING ASSIST switch must be ON
-TE flap at 1 or greater
-AP disengaged
FLIGHT CONTROLS
- How is horizontal stabilizer trim operated?
by a single electric motor controlled by either;
-stabilizer trim switches on the control wheel, or
-autopilot trim, or
-manually rotating the stab trim wheel
- How is MCAS inhibited?
-positioning either stab trim cutout switch to CUTOUT
-forward movement of the control column
- How is a failure of the Speed Trim or MCAS function indicated?
Illumination of SPEED TRIM FAIL light
- Can the Speed Trim System be overridden? If so, how?
Yes, by;
-actuation of the control wheel trim switches (inhibits operation for 5 seconds)
-manual rotation of either stab trim wheel
- Which system(s) help in identifying stalls and assist in control should one occur?
-yaw damper
-Elevator Feel Shift (EFS)
-Speed Trim System (STS)
-Stall Management/Yaw Damper (SMYD) computer does calculations and sends commands for stall management and yaw damper. Also provides PLI and speeds from AOA and ADIRU outputs and wing configuration
- When is rudder limiting active?
-Both engines operating
-Airspeed above 135 knots
- What is required for the main yaw damper to operate?
Normally;
-Hydraulic system B
-SMYD computer 1 (SMYD as a backup)
-YAW DAMPER switch ON
- What is the purpose of the Landing Attitude Modifier?
Two functions; nose gear clearance and drag.
When flaps are in positions 15 through 30 and the thrust levers are near idle, the
speedbrakes symmetrically deploy to create additional drag for slowing.
At flap positions 30 and 40, LAM symmetrically deploys flight spoilers on approach to
reduce lift and force the aircraft to have a higher angle of attack. LAM maintains an
acceptable nose landing gear contact margin. The amount of spoiler deflection depends
on the approach speed and begins at approximately VREF+10.
- When is emergency descent speedbrake active?
Armed when above 30,000 ft and cabin altitude warning is active.
Activated automatically by moving the SPEED BRAKE lever when the system is armed.
- Under what conditions will the speedbrakes stow automatically?
After RTO or landing, if either thrust lever is advanced
- When does the SPEEDBRAKES EXTENDED light illuminate?
In flight if the SPEED BRK lever is beyond the ARMED detent and any of the following conditions exist:
• A thrust lever is greater than 40° for more than 3 seconds or idle for more than 15 seconds, or
• TE flaps extended more than Flaps 10, or
• Radio altitude less than 800 ft
- When does the PFD warning SPEEDBRAKE along with an aural alert activate?
If the speedbrakes do not deploy after landing or RTO above 80 kts
- When does the LE FLAPS TRANSIT light illuminate?
Anytime the LE devices are in motion or do not agree with scheduled flap position.
- Which system(s) powers the alternate flap system?
The ALTERNATE FLAPS position switch controls an electric motor that extends or
retracts the TE flaps. The LE devices may also be extended using the alternate flap system; however, the LE devices are extended using the standby hydraulic system and cannot be retracted.
- Are there flap protective systems available during an alternate flap extension?
No, there is no asymmetry, LE uncommanded motion, or skew protection
- What is the purpose of the flap load relief system?
Protects the flaps from excessive air loads
