SECTION 14 - Landing Gear & Brakes

Question 1

If the nutcracker “TEST” switch is pressed while on the ground, what is the affect on the landing gear system?

Answer 1

The landing gear handle down-lock solenoid will be momentarily unlocked

Question 2

What is the recommended procedure if the landing gear fails to retract after takeoff?

Answer 2

Place the gear handle down and return for landing

Question 3

What is the first action to take following an unsuccessful nutcracker test?

Answer 3

Turn the ground spoiler switch OFF

Question 4

What is the purpose of the Aux Pump / Brake System Check?

Answer 4

To check the automatic latch-on feature of the aux hydraulic pump

Question 5

If the airplane is landed with 1,200 psi on the brake accumulator gauge (assuming proper pre-charge) and the normal brakes fail, will the emergency brakes be available?

Answer 5

No

Question 6

Gulfstream has recommendations regarding landing the airplane with less than all 3 landing gear down and locked. Where are these procedures found?

Answer 6

The AFM, emergency procedures section

Question 7

What does the red light in the landing gear handle indicate?

Answer 7

If the handle is up - at least one gear door is not closed. If the handle is down - at least one landing gear is not down

Question 8

If the parking / emergency brake system is used to stop the aircraft, what type of anti-skid protection is available?

Answer 8

None

Question 9

Where are the brake temperatures read?

Answer 9

Brakes synoptic page (SPZ-8400) or BTMS (if installed)

Question 10

What does pulling the emergency landing gear T-handle do?

Answer 10

It repositions the dump valves allowing fluid to be returned to the reservoir and releases the nitrogen to extend the landing gear

Question 11

How are the landing gear handle and the landing gear selector valve connected?

Answer 11

Mechanically

Question 12

Describe how to set the parking brake.

Answer 12

Pull the brake handle up, turn it 90°, and ensure that the brake accumulator pressure reads at least 1,700 psi

Question 13

How would a failure of a gear door to close after gear retraction be indicated on the flight deck?

Answer 13

Red light in gear handle

Question 14

What is the first action that should be taken if the nutcracker system fails to shift to the airborne mode after takeoff?

Answer 14

Disarm the ground spoilers

Question 15

If the left nutcracker switch is indicating in-flight, and the right nutcracker switch is on the ground, will the systems respond as if they are airborne or on the ground?

Answer 15

Airborne

Question 16

What is the function of the dump valve D-ring handle?

Answer 16

It resets the dump valves to hydraulic operation so that the landing gear can operate normally

Question 17

What is the correct accumulator pre-charge pressure for the parking / emergency brake?

Answer 17

1200 psi, increasing or decreasing 25 psi for each 10° F above or below 70° F

Question 18

How are the landing gear doors opened for a preflight walk -around?

Answer 18

Install the door control valve pins, and open the doors by operating the ground service valve

Question 19

If a closed landing gear uplock is discovered during the preflight walk-around, how can the uplock be opened?

Answer 19

Install the door control valve pins and open the uplock by operating the ground service valve

Question 20

During the preflight walk-around, what is the correct indication on the emergency landing gear extension bottle gauge?

Answer 20

3000 psi at 70° F

Question 21

What is the normal pedal steering authority?

Answer 21

+/- 7 degrees

Question 22

What will prevent the tires from blowing due to excessively hot brakes?

Answer 22

Wheel fuse plugs

Question 23

What physical actions must be taken prior to towing the airplane?

Answer 23

The steering link pin must be removed, the landing gear lock pins must be installed, and the cabin door must be closed or supported by a jury cable

Question 24

What is the indication of a successful brake BITE check?

Answer 24

3 CAS messages generated and cleared ( 4 messages for brake-by-wire aircraft)

Question 25

How does the anti–skid system determine if a wheel is skidding?

Answer 25

By comparing the wheel speed sensor to either its same wheel on strut (brake-by-wire) or opposite wheel (HMAB)

Question 26

What brake message{s) must be cleared prior to takeoff?

Answer 26

The amber “BRAKE FAIL” CAS message (all aircraft), and the amber “BRAKE PEDAL” CAS message (brake-by-wire only)

Question 27

What is the maximum altitude for flying with the landing gear extended?

Answer 27

20,000 feet MSL

Question 28

What are the maximum landing gear operating speeds?

Answer 28

1. Normal gear extension - 225 KCAS (0. 70 MT)

2. Emergency gear extension - 175 KCAS

Question 29

What is the maximum landing gear extended speed?

Answer 29

250 KCAS (0.70 MT)

Question 30

What are the maximum tire speed limitations?

Answer 30

1. Non-SP aircraft - 182 knots

2. SP aircraft - 195 knots

Question 31

Is a takeoff permitted with the anti-skid inoperative?

Answer 31

Takeoff is permitted with the anti-skid inoperative, provided ground spoilers are operative, 20° flaps are used, and the cowl and wing anti­icing systems are not used

Question 32

Describe the limitation associated with missing airframe & engine parts.

Answer 32

The airplane must be operated in accordance with the limitations specified in the AFM, and as amended by the CDL, AFM Appendix B