Speed Brake and Spoilers

Question 1

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

Answer 1

When Flaps FULL

Question 2

When do the Ground Spoilers automatically extend during landing?

Answer 2

When armed:
• Both thrust levers IDLE.
• Both main landing gear touched down

When not armed:
• Both main landing gear touched down
• One reverse is selected and the other engine is IDLE.

Question 3

When do the Ground Spoilers automatically extend during rejected T/O ?

Answer 3

If ground spoilers armed with airspeed above 72 knots:
When BOTH thrust levers at IDLE
If ground spoilers NOT armed with airspeed above 72 knots:
When reverse thrust is selected on at least one engine with the other thrust lever at IDLE.

Question 4

Will the ground spoilers extend if Touchdown with reverse selected and only one landing GEAR is
compressed?

Answer 4

Partially – Full extension is limited until both main gears are compressed.

Question 5

When will the ground spoilers automatically retract?

Answer 5

• Thrust levers at idle and speed brake lever is down

* When at least one thrust lever is advanced above IDLE

Question 6

When do the speed brakes inhibit?

Answer 6

Speed brakes (2-3-4) are inhibited when:
• SEC1 and SEC3, both have fault.
• A.O.A protection is active.
• Alpha floor activation.
• Thrust levers above MCT.
• Flap full.
• One elevator fault. (Spoiler 3, 4 inhibited).
• When speed brake fails on one wing, the symmetric one on the other wing is inhibited.

Question 7

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

Answer 7

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