Landing Gear

Question 1

What is indicated by a red landing gear indicator light?

Answer 1

• Gear not down and locked w/ thrust lever at idle, below 800’ RA or
• Gear in transit or unsafe (disagreement with gear handle)

Question 2

When is the Gear Warning Horn activated?

Answer 2

• Flaps 0° – 10°
• Flaps 15° – 25° ! !!!
Gear not down and locked w/ thrust lever at idle, below 800’ RA (Horn can be silenced if above 200’ RA)
Gear not down and locked w/ thrust lever at idle (Horn cannot be silenced)
Gear not down and locked (Horn cannot be silenced)
• Flaps 30° – 40°! ! ! ! !
(Note: For purposes of activating Gear Warning Horn, “idle” means thrust lever position

Question 3

When is the Gear Warning Horn activated?

Answer 3

• Flaps 0° – 10° Gear not down and locked w/ thrust lever at idle, below 800’ RA (Horn can be silenced if above 200’ RA)
• Flaps 15° – 25° Gear not down and locked w/ thrust lever at idle (Horn cannot be silenced)
• Flaps 30° – 40° Gear not down and locked (Horn cannot be silenced)

(Note: For purposes of activating Gear Warning Horn, “idle” means thrust lever position

Question 4

What conditions must be met to arm autobrakes for takeoff?

Answer 4

• RTO selected
• Operational antiskid and autobrakes 
• On ground
• Thrust levers IDLE
•

Question 5

If takeoff is rejected with RTO selected, when are autobrakes applied?

Answer 5

Thrust levers retarded to IDLE at 90K or above

Question 6

How late may autobrakes be selected for landing?

Answer 6

May be selected prior to 60K GS

Question 7

If landing with 1, 2, 3, or MAX selected, when are autobrakes applied?

Answer 7

• Thrust levers retarded to IDLE and

* Main wheel spin up

Question 8

What will cause autobrakes to disarm during RTO or landing?

Answer 8

• AUTO BRAKE Select Switch to OFF
• Apply manual brakes AUTO BRAKE DISARM
• Advance thrust levers (after touchdown + 3 seconds) AUTO BRAKE DISARM
• Advance SPEED BRAKE Lever to DOWN AUTO BRAKE DISARM

Question 9

What will cause autobrakes to disarm during RTO or landing?

Answer 9

• AUTO BRAKE Select Switch to OFF
• Apply manual brakes AUTO BRAKE DISARM
• Advance thrust levers (after touchdown + 3 seconds) AUTO BRAKE DISARM
• Advance SPEED BRAKE Lever to DOWN AUTO BRAKE DISARM

Question 10

What other conditions will cause AUTO BRAKE DISARM Light to illuminate?

Answer 10

• AUTO BRAKE Select Switch in RTO for landing AUTO BRAKE DISARM
• Malfunction in autobrake system AUTO BRAKE DISARM

The light will also illuminate for 1 – 2 seconds when RTO is selected on the ground.

Question 11

Is antiskid protection available with alternate brakes?

Answer 11

Yes, but applied to wheel pairs instead of individual wheels

Question 12

How are alternate brakes selected?

Answer 12

Automatically, if System B pressure below limits

Question 13

If normal and alternate brakes are lost, is braking still available?

Answer 13

Yes, 1 or 2 applications with accumulator pressure only

Question 14

What is indicated by the Hydraulic Brake Pressure Indicator?

Answer 14

Accumulator pressure (precharge 1000 psi; normal brake pressure 3000 psi)

Question 15

May the accumulator be used to set the parking brakes?

Answer 15

Yes

Question 16

What happens if gear is retracted with loose treads on a damaged tire?

Answer 16

Treads impact a frangible fitting in the wheel well ring opening, affected gear free falls back to down position and cannot be retracted until fitting is replaced by maintenance

Question 17

How much nose wheel steering is available?

Answer 17

• Rudder pedals 7°

* Nose wheel steering wheel 78°

Question 18

What is maximum speed for Gear Retraction?

Answer 18

235K

Question 19

What is maximum speed for Gear Extension?

Answer 19

270K/.82M

Question 20

What is maximum speed for Gear Extended?

Answer 20

320K/.82M

Question 21

With wheels on runway and struts extended, a tailstrike will occur at _____° pitch attitude.

Answer 21

11

Question 22

Is it possible to retract the landing gear if the Manual Extension Access Door is open?

Answer 22

No