THS / Flaps/Slats / Speedbrake/Spoilers - Rev 04 Flashcards
How is the THS normally operated in flight?
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The flight control computers control trim functions automatically
If NO hydraulic power is available can the THS be positioned?
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No - the THS requires hydraulic power from the Green or Yellow systems
If a complete flight control computer failure occurs can the THS be positioned?
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Yes, mechanical trimming is possible by manually positioning the Pitch Trim Wheel
Can you move the PITCH trim wheel if all systems are working normally?
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Manual inputs have priority over computer inputs. The autopilot will disconnect.
What happens to the THS when the aircraft enters Ground Mode?
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The trim automatically resets to zero (inside the green band)
With only Green hydraulic system pressure available, will both the flaps and slats operate?
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Yes, at 1/2 speed
What system prevents Flap or Slat asymmetry?
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Wing Tip Brakes (WTB)
What causes the WTBs to activate?
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ROAM
Runaway (Move handle to 1, all go to 3)
Overspeed (Flap jack screw breaks)
Asymmetry (Both on one side move farther)
Movement (Never touch handle, ALL just move)
If the WTB activates due to a flap asymmetry can the slats still operate?
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Yes, only flap operation is inhibited
How may Slat/Flap Control Computers (SFCC) are installed?
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2
What would occur if one SFCC failed?
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The slats and flaps would continue to operate, but at half speed
What flap/slat configurations correspond to position 1 on the FLAPS lever and how do they differ?
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a. CONF 1+F is used for takeoff and provides both slats (position 1) + flaps
b. CONF 1 is used in-flight and is slats only
What is Alpha Lock?
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This function inhibits retracting slats from 1 to 0 at a high angle of attack or low airspeed
When the FLAP legend appears in cyan on the upper ECAM display what is indicated?
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Flaps/slats in transit
What happens to the ailerons when the flaps are extended?
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The ailerons droop 5°
Is there any landing configuration when speed brake extension is inhibited?
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Flaps FULL
When do the Ground Spoilers automatically extend?
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a. Partial – When reverse thrust is selected on at least one engine with the other at idle and one main landing gear strut is compressed
b. Full – At touchdown of both main gear , or in case of RTO with airspeed above 72 knots, when BOTH thrust levers at IDLE (if ground spoilers armed) or when reverse thrust is selected on at least one engine with the other thrust lever at IDLE (if the ground spoilers are not armed)
At touchdown with reverse selected and only one landing gear strut compressed, will the ground spoilers extend?
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Partially – Full extension is limited until both main gear struts are compressed
When will the ground spoilers automatically retract?
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When at least one thrust lever is advanced above IDLE
When is speedbrake extension inhibited?
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SAFET
SEC 1 and 3 have failed
AOA protection is active
Flaps FULL
Elevator (L or R) fault (only spoilers 3 and 4 are inhibited)
Thrust levers above the MCT position
In flight, what happens if a spoiler fault is detected or electrical power is lost?
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The spoiler automatically retracts
What is the difference between the A319 and A320 regarding speed brake usage with the AP on?
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With the A319 you get full spoiler deflection and with the A320 you only get partial spoiler deflection
When will the Automatic Retraction System (ARS) operate?
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During acceleration in CONF 1+F the FLAPS (not slats) will automatically retract to 0 at 210 knots
