Flaps / Slats

Question 1

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

Answer 1

Yes, at half speed

Question 2

What system prevents Flap or Slat asymmetry?

Answer 2

Wing Tip Brakes (WTBs)

Question 3

What causes the WTB’s to activate

Answer 3

• Runaway
• Overspeed (flaps)
• Asymmetry
• Movement (un-commanded)

Question 4

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

Answer 4

Yes, only flap operation is inhibited

Question 5

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

Answer 5

2

Question 6

What would occur if one SFCC failed?

Answer 6

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

Question 7

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

Answer 7

• CONF 1+F is used for takeoff and provides both slats (position 1) + flaps
• CONF 1 is used in-flight and is slats only

Question 8

When will the Automatic Retraction System (ARS) operate?

Answer 8

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

Question 9

What is Alpha Lock?

Answer 9

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

Question 10

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

Answer 10

Flaps/slats in transit

Question 11

What happens to the ailerons when the flaps are extended?

Answer 11

The ailerons droop 5°