Landing Gear, Brakes and Steering

Question 1

An NWS LIMIT EXCEEDED (caution) CAS message indicates that _____. As a result, crew should _____.

Answer 1

a call to MX is required—the nosewheel has
been turned beyond 120°

check shear pins—if broken, then the nose wheel has exceeded 123° and possible damage has occurred

Question 2

_____° of steering authority is available with the tiller.

Answer 2

65

Question 3

_____° of steering authority is available with the rudder pedals.

Answer 3

7

Question 4

Nose gear steering is actuated by the _____ hydraulic system.

Answer 4

LEFT

Question 5

During retraction, the nose gear is centered _____.

Answer 5

electrically by the Steering Control Unit (SCU); mechanically by the cams on the top of the nose strut

Question 6

Antiskid is available down to a speed of _____ kt.

Answer 6

10

Question 7

Brake cooling times must be observed in order to _____.

Answer 7

ensure that there is sufficient brake energy available to come to a complete stop within the charted distance if a takeoff is rejected

Question 8

Landing gear is normally actuated by the _____ hydraulic system

Answer 8

LEFT

Question 9

The landing gear is held up via _______.

Answer 9

Mechanical uplocks

Question 10

When there is a loss of R and L hydraulic pressure, the brake accumulators function to provide _____.

Answer 10

one continuous application of toe brakes to a complete stop

Question 11

The parking brake accumulator has sufficient pressure for _____ applications and should hold for _____ hours.

Answer 11

-Six
-24 hours

Question 12

If a gear control or left hydraulic system failure occurs, the landing gear is extended by _____.

Answer 12

an alternate method per the checklist—pull the manual release handle (LG PULL); gear extends via gravity

Question 13

The LG PULL handle functions to _____.

Answer 13

manually release the uplocks (nose and main gear); actuate the dump valves (port fluid pressure to the return side of actuator)

Question 14

The LG PULL handle should be stowed after _____.

Answer 14

landing and after the gear pins are installed

Question 15

The _____ also assists the main gear freefalling to fully extended (down and locked) position.

Answer 15

main landing gear down-lock assist accumulator

Question 16

The pressure read for the main landing gear down-lock assist accumulator is _____.

Answer 16

a purple-banded gauge located in the battery
compartment

Question 17

In the event of a HYD PRESS LOW (red) CAS message, the alternate gear extension procedure is in use. If flaps have already extended, what other factor may be of concern?

Answer 17

30 min are required to extend the landing gear. The gear lockdown assist accumulator will retain pressure for 30 min. Gear must be down prior to this time limitation if the flaps are at
other than 0°.

Question 18

The brake wear indicators are checked with _____.

Answer 18

the Hydraulic System pressurized and the parking brake set—the wear pins are not flush with the housing

Question 19

The brake accumulator gauges are located in _____.

Answer 19

the battery bay

Question 20

Under a NORMAL BRAKES FAIL warning condition, braking is applied by _____ in order to stop the aircraft.

Answer 20

pulling the Emer/Parking Brake smoothly

Question 21

Under a NORMAL BRAKES FAIL warning condition, during application of Emer/Parking Brake, will anti-skid or differential braking be available?

Answer 21

NO

Question 22

The tire pressures for the Challenger 300 are: _____

Answer 22

Nose—113-119 PSI; mains—157-165 PSI

Question 23

The tire pressures for the Challenger 350 are: _____

Answer 23

Nose—113-119 PSI; mains—167-175 PSI

Question 24

_____ prevent the main tires from exploding in an overheat situation.

Answer 24

Four fuse-sensitive plugs in each wheel
assembly

Question 25

There are _____ brake wear indicator pins on each brake assembly, located _____

Answer 25

-Two

-1 on top and 1 underneath

Question 26

What (2) conditions cause GEAR warnings?

Answer 26

1) Below 500 ft AGL, gear is up or in transit, thrust lever angle < 26°—aural warning, “GEAR” (may also be accompanied by TAWS warning, “TOO LOW, GEAR”).

2) Flaps beyond 27° before all three landing
gear are down and locked°—aural warning,
“GEAR.”

Question 27

Gear warning (4) indications include: _____.

Answer 27

-Aural warning
-Triple chime
-Red warning light
-Red on gear indications display

Question 28

Components (3) of the landing gear monitored by the Proximity Sensing System include: _____.

Answer 28

-Main lading gear
-Nose gear
-Nose gear doors