LANDING GEAR

Question 1

DESCRIBE THE EMERGENCY EXTENSION OF THE LANDING GEAR.

Answer 1

Emergency Extension
➢ If normal extension should fail, manual extension is accomplished by pulling the release handle.
▪ The landing gear uplocks and forward nose door camlocks are released.
▪ Hydraulic dump valves are released allowing HYD system 3 pressure to dissipate.
▪ Hydraulic pressure from system 2 is sent to the main gear emergency down lock assist actuators.

Question 2

DESCRIBE THE FUNCTION AND OPERATION OF THE ANTI SKID SYSTEM.

Answer 2

Operation is automatic when armed. Works just like a car. To become effective, the system requires:
▪ 35 KTS wheel speed, or
▪ WOW signal for 5 sec
▪The system disengages at a wheel speed less than 10 KTS

Question 3

DESCRIBE THE BTMS.

Answer 3

Brake Temperature Monitoring System (BTMS)
➢ A temperature sensor in each brake unit monitors the temperature of individual brakes and displays the indications on ED 2.

Question 4

HOW DOES THE MLG DETECT AN OVER HEAT?

Answer 4

➢ The main gear bays are protected by a single loop overheat detector.

Question 5

HOW DOES THE NOSE WHEEL STEERING FUNCTION?

Answer 5

Nose wheel steering is controlled by the tiller and rudder pedals when the switch is in the armed position.
▪ Tiller limits are L or R 70 degrees
▪ Rudder pedal limits are L or R 5 degrees