Flaps / Slats

Question 1

When selecting the flap lever to 1 after the flaps have been at CONF 2 or higher, what setting will the flaps and slats go to?

Answer 1

• CONF1+F
• This configuration has a maximum speed 215 knots, with automatic
retraction of flaps occurring at 210 knots.

Question 2

What is the normal flap setting for a go-around?

Answer 2

Retract one step

Question 3

How are the flaps and slats affected if only GREEN hydraulic system pressure available?

Answer 3

The flaps and slats will still operate, but at half speed

Question 4

What system prevents flap or slat asymmetry?

Answer 4

Wing Tip Brakes (WTB)

Question 5

What causes the WTBs to activate?

Answer 5

• Runaway
• Over speed (flaps)
• Asymmetry
• Movement (un-commanded)

Question 6

If the WTBs activate due to a flap asymmetry, how are the slats affected?

Answer 6

The slats can still operate normally - only flap operation is inhibited.

Question 7

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

Answer 7

Two

Question 8

What would occur if one SFCC failed?

Answer 8

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

Question 9

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

Answer 9

• 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 10

When will the Automatic Retraction System (ARS) operate?

Answer 10

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

Question 11

What is ALPHA LOCK?

Answer 11

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

Question 12

When the FLAP legend appears in cyan on the E/WD, what is indicated?

Answer 12

Flaps/slats in transit

Question 13

What happens to the ailerons when the flaps are extended?

Answer 13

The ailerons droop