LANDING GEAR

Question 1

1. When the landing gear is retracted, what holds the gear in the up and locked position?

Answer 1

1. Hydraulic pressure is removed and unlocks hold the gear up.

Question 2

2. What occurs when the gear handle is placed to the DN position?

Answer 2

2.
EICAS displays a white crosshatch in-transit indication.
Gear free-fall to the down and locked position.
Downlocks move hydraulically to locked position.
Hydraulically actuated gear doors close.
Main gear trucks tilt to flight position.

Question 3

3. How is the gear extended using the alternate gear extension?

Answer 3

3. An electrically driven hydraulic pump and trapped hydraulic fluid from the center system releases all unlocks on the gear and doors. Gear free fall to the down and locked position.

Question 4

4. Normal brake pressure is supplied from which Hydraulic system?

Answer 4

4. Right hydraulic system

Question 5

5. When Normal Brake pressure is lost, which hydraulic system provides brake pressure?

Answer 5

5. Center hydraulic system

Question 6

6. Antiskid protection for the brakes is provided in which braking system?

Answer 6

6. Antiskid protection is provided in the normal and alternate brake hydraulic systems. The normal brake hydraulic system provides each main gear wheel with individual antiskid protection.
   Alternate/Reserve antiskid system provides tandem wheel pairs for the forward and middle axle wheels and the aft wheels have individual antiskid protection.

Question 7

7. When the normal brake system is operating, what do auto brakes provide?

Answer 7

7. Automatic breaking at preselected deceleration rates for landing and maximum braking for rejected takeoff.

Question 8

8. With loss of the normal, alternate/reserve brake systems, the accumulator provides brake pressure. How many applications will the accumulator provide?

Answer 8

8. Several braking applications or parking brake application.

Question 9

9. The Autobrake system can be disarmed by what pilot actions?

Answer 9

9.
Advancing either throttle after landing
Manual braking
Moving the speed brake lever to the DOWN detent
Selecting DISARM or OFF with the selector

Question 10

10. Under what condition will the RTO position of the auto brakes apply maximum brake pressure when selected prior to takeoff?

Answer 10

10. Groundspeed is above 85 knots and both throttles are retarded to idle.

Question 11

11. Autobrakes are disarmed under what system conditions?

Answer 11

11.
ADIRU failure
Autobrake fault
Normal antiskid system fault
Loss of the R HYD system pressure

Question 12

12. What indication does the pilot have that the parking brake is set?

Answer 12

12. PARKING BRAKE SET displays on the upper EICAS screen

Question 13

13. The parking brake is set when both brake pedals are pressed and the handle raised. How is the parking brake released?

Answer 13

13. The parking brake is released by pressing the pedals until the PARKING BRAKE lever releases.

Question 14

14. When a brake is deactivated, the pilot can find it indicated where?

Answer 14

14. The word BRAKE appears on the landing gear synoptic next to the deactivated brake.

Question 15

15. What indicates anti skid faults?

Answer 15

15. ASKID indication on the landing gear synoptic for the respective wheel.

Question 16

16. What is indicated by 5.1 next to a wheel on the landing gear synoptic?

Answer 16

16. Overheat condition of the indicated brake. Expect a solid amber box in conjunction with any reading 5.0 and greater.