Landing gear

Question 1

When should the PWR STEER switch be placed to OFF?

Answer 1

When you want to isolate the brakes, power steering, and swivel lock solenoid

Question 2

What provides a source of pressure for brake operation when the PWR STEER switch is off?

Answer 2

Brake accumulator

Question 3

What procedure should you use to restore power steering control if the PWR STEER advisory light comes on while taxiing?

Answer 3

(a) lift the aircraft to a hover (the centering cams cannot turn with weight on the aft wheels)
(b) Place the SWIVEL switch to LOCK.
(c) Land and place the SWIVEL switch to STEER

Question 4

What provides a source of pressure for swivel lock operation when the PWR STEER switch is off?

Answer 4

Power steering module accumulator

Question 5

How much pressure should be in the brake accumulator on preflight?

Answer 5

600 to 1400 PSI

Question 6

What should be the position of the SWIVEL switch for all takeoffs and landings?

Answer 6

Lock, we fly with the wheels in the trailing position

Question 7

Which 3 subsystems are affected by the PWR STEER switch?

Answer 7

Brakes, power steering, and swivel lock

Question 8

With the swivel switch in the steer position, what automatic DAFCS function is disabled?

Answer 8

DAFCS heading hold is off

Question 9

The turning limits for the CH-47 are _______ Degrees Left and _______Degrees Right.

Answer 9

58* left, 82* right

Question 10

What is the purpose of the aft wheel swivel locks?

Answer 10

to lock the aft gear in the trailing position

Question 11

What are the three position of the swivel switch?

Answer 11

Steer, unlock, lock

Question 12

Which landing gear assembly can be steered by using the steering control knob in the cockpit?

Answer 12

Aft right landing gear

Question 13

What are the index marks around the steering control knob used for?

Answer 13

Reference marks only

Question 14

If the Power Steer Switch is placed in the off position will the aircraft brake still operate?

Answer 14

yes, if there’s pressure in the brake accumulator

Question 15

The pressure reducer reduces the normal system pressure from _____psi to _____ psi for brake operation.

Answer 15

3,000 to 1,390 PSI

Question 16

The air/oil shock struts utilize ____________ to absorb shock and ___________ to dampen movement.

Answer 16

Compressed gas and hydraulic fluid

Question 17

What does WOW stand for and what is another term used to identify them?

Answer 17

Weight on wheels, proximity switch

Question 18

Pressure to the centering cam piston is applied when the swivel switch is placed to the _____ position?

Answer 18

Lock