Landing Gear, Brakes, Steering

Question 1

What does a NWS LIMIT EXCEEDED(C) CAS indicate, and what action should be taken?

Answer 1

Call Maintenance.

Nosewheel has been turned beyond 120 degrees.

Check shear pins. If broken then the nose wheel has exceeded 123 degrees and possible damage has occurred.

Question 2

How much steering authority is available with the tiller? Rudder pedals?

Answer 2

65 degrees tiller

7 degrees rudder pedals

Question 3

What centers the nose gear during retraction?
(2)

Answer 3

• Electrically by the Steering Control Unit (SCU)

- Mechanically by cams on the top of the nose strut

Question 4

Antiskid is available down to what speed?

Answer 4

10 knots

Question 5

Why must we observe brake cooling times?

Answer 5

To ensure there is sufficient brake energy available to come to a complete stop within the charted distance if we reject a takeoff

Question 6

The landing gear is normally actuated by which hydraulic system?

Answer 6

Left Hydraulic System

Question 7

Gear is held up by what?

Answer 7

Mechanical uplocks

Question 8

What do the brake accumulators provide us when loss of R and L hydraulic pressure?

(Total hydraulic loss)

Answer 8

1 continuous application to a complete stop.

Question 9

Parking brake accumulator has sufficient pressure for how many applications?

Answer 9

6

Question 10

If a gear control or left hyd system failure occurs, how do we get the gear extended?

Answer 10

Alternate method through the checklist - pull the manual release handle -“LG PULL”

Question 11

What does the “LG PULL” handle do?

Answer 11

• Manually releases the uplocks(Nose and Main Gear)

* Actuates the dump valves(ports fluid pressure to the return side of actuator)

Question 12

When should the “LG PULL” handle be stowed?

Answer 12

After landing and the gear pins installed.

Question 13

What also assists the main gear to be fully extended(down and locked)?

Answer 13

Main landing gear down lock assist accumulator

Question 14

Where do we read the main gear down lock assist accumulator pressure?

Answer 14

Gauge is located in the battery compartment (Purple band)

Question 15

How do we check the brake wear indicators?

Answer 15

With the hydraulic system pressurized and parking brake set; the pins are not flush with the housing.

Question 16

Where are the brake accumulator gauges located?

Answer 16

In the battery bay

Question 17

With a NORMAL BRAKES FAIL indication, how will we apply braking to stop the aircraft?

• Will we have anti-skid or differential braking?

Answer 17

By pulling the Emer/Parking brake smoothly.

No.

Question 18

When does the PTU operate in “AUTO” ?
(4)

Answer 18

• Left EDP failed
• Right EDP producing pressure.
• Weight off wheels(WOW in air)
• Gear not in the selected position (ie…gear is down with the handle “UP”)

Question 19

What prevents the main tires from exploding in an overheat situation?

Answer 19

4 fuse sensitive plugs in each wheel assembly

Question 20

How many brake wear indicator pins are there on each brake assembly?

Answer 20

2 pins on each assembly – 1 on top and 1 underneath

Question 21

What components of the landing gear are monitored by the Proximity Sensing System?

Answer 21

Main landing gear, Nose gear, Nose gear doors.

Question 22

Brakes are armed when?

Answer 22

1. Gear down and

A) WOW for 5 seconds

—or—

B) 50 knot wheel spin up

Question 23

Brake cooling times are found in the?

Answer 23

AFM

Question 24

What is the maximum rotational travel each side of center of the nose gear while towing?

Answer 24

-120 degrees without disconnecting the torque links.

Question 25

At what degree of nose angle might the nose landing gear swivel pins shear?

Answer 25

Beyond 123 degrees..

Question 26

oWith torque links disconnected, what minimum nose gear strut extension is required in order to rotate the nose gear beyond the travel limits?

Answer 26

3.5”.

Question 27

What centers the nose gear during retraction?

Answer 27

• Electrically by the Steering Control Unit (SCU)

- Mechanically by cams on the top of the nose strut

Question 28

What do the brake accumulators provide us when loss of R and L hydraulic pressure?

Answer 28

1 continuous application of toe brakes to a complete stop.

Question 29

If using the alternate gear extension procedure because of a HYD PRESS LOW (red) CAS, what is a concern if flaps have already extended?

Answer 29

• 30 minutes to extend the landing gear. The gear downlock assist accumulator will retain pressure for 30 minutes. Gear must be down prior to this time limitation if the flaps are other than 0O

Question 30

What conditions cause GEAR warnings?

Answer 30

• Below 500’ AGL, gear is up or in transit, thrust lever angle < 26O – Aural warning “GEAR”. May also be accompanied by TAWS warning “TOO LOW, GEAR”
• Flaps beyond 27O before all 3 landing gear are down and locked. - Aural warning “GEAR”

Question 31

What are the Gear warning indications?

Answer 31

• Aural warning, triple chime, red warning light, red on gear indications display