THS / Flaps/Slats / Speedbrake/Spoilers - Rev 04

Question 1

How is the THS normally operated in flight?

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Answer 1

The flight control computers control trim functions automatically

Question 2

If NO hydraulic power is available can the THS be positioned?

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Answer 2

No - the THS requires hydraulic power from the Green or Yellow systems

Question 3

If a complete flight control computer failure occurs can the THS be positioned?

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Answer 3

Yes, mechanical trimming is possible by manually positioning the Pitch Trim Wheel

Question 4

Can you move the PITCH trim wheel if all systems are working normally?

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Answer 4

Manual inputs have priority over computer inputs. The autopilot will disconnect.

Question 5

What happens to the THS when the aircraft enters Ground Mode?

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Answer 5

The trim automatically resets to zero (inside the green band)

Question 6

With only Green hydraulic system pressure available, will both the flaps and slats operate?

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Answer 6

Yes, at 1/2 speed

Question 7

What system prevents Flap or Slat asymmetry?

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Answer 7

Wing Tip Brakes (WTB)

Question 8

What causes the WTBs to activate?

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Answer 8

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)

Question 9

If the WTB activates due to a flap asymmetry can the slats still operate?

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Answer 9

Yes, only flap operation is inhibited

Question 10

How may Slat/Flap Control Computers (SFCC) are installed?

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Answer 10

2

Question 11

What would occur if one SFCC failed?

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Answer 11

The slats and flaps would continue to operate, but at half speed

Question 12

What flap/slat configurations correspond to position 1 on the FLAPS lever and how do they differ?

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Answer 12

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

Question 13

What is Alpha Lock?

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Answer 13

This function inhibits retracting slats from 1 to 0 at a high angle of attack or low airspeed

Question 14

When the FLAP legend appears in cyan on the upper ECAM display what is indicated?

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Answer 14

Flaps/slats in transit

Question 15

What happens to the ailerons when the flaps are extended?

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Answer 15

The ailerons droop 5°

Question 16

Is there any landing configuration when speed brake extension is inhibited?

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Answer 16

Flaps FULL

Question 17

When do the Ground Spoilers automatically extend?

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Answer 17

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)

Question 18

At touchdown with reverse selected and only one landing gear strut compressed, will the ground spoilers extend?

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Answer 18

Partially – Full extension is limited until both main gear struts are compressed

Question 19

When will the ground spoilers automatically retract?

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Answer 19

When at least one thrust lever is advanced above IDLE

Question 20

When is speedbrake extension inhibited?

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Answer 20

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

Question 21

In flight, what happens if a spoiler fault is detected or electrical power is lost?

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Answer 21

The spoiler automatically retracts

Question 22

What is the difference between the A319 and A320 regarding speed brake usage with the AP on?

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Answer 22

With the A319 you get full spoiler deflection and with the A320 you only get partial spoiler deflection

Question 23

When will the Automatic Retraction System (ARS) operate?

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Answer 23

During acceleration in CONF 1+F the FLAPS (not slats) will automatically retract to 0 at 210 knots