Position & Warning System

Question 1

Where is the landing gear safety switch usually located?

Answer 1

On the main gear shock strut.

Question 2

A typical takeoff warning indication system, in addition to throttle setting, monitors the position of which of the following?

Answer 2

Elevators, speed brake, flaps, and stabilizer trim.

Question 3

(Refer to Figure 19.) Which repair should be made if the gear switch was placed in UP position and the gear does not retract?

Answer 3

Replace electrical wire no.12

Question 4

When a landing gear safety switch on a main gear strut closes at liftoff, which system is deactivated?

Answer 4

Antiskid system

Question 5

What safety device is actuated by the compression and extension of a landing gear strut?

Answer 5

Ground safety switch

Question 6

The pneumatic (reed) type stall warning system installed in some light aircraft is activated by

Answer 6

Negative air pressure

Question 7

The primary purpose of a takeoff warning system is to alert the crew that a monitored flight control is not properly set prior to takeoff. The system is activated by

Answer 7

A thrust layer

Question 8

Which of the following conditions is most likely to cause the landing gear warning system signal to sound?

Answer 8

Landing gear not locked down and throttle retarded.

Question 9

1) An antiskid system is designed to apply enough force to operate just below the skid point.
2) A warning lamp lights in the cockpit when the antiskid system is turned off or if there is a system failure.
Regarding the above statements,

Answer 9

Both no.1 and no.2 are true.

Question 10

1) A DC-selsyn system is a widely used electrical method of indicating a remote mechanical movement or position.
2) A synchro-type indicating system is an electrical system is used for transmitting information from one point to another.
Regarding the above statements,

Answer 10

Both no.1 and no.2 are true

Question 11

The rotor in an autosyn remote indicating system uses

Answer 11

An electromagnet

Question 12

Stall warning systems are generally designed to begin warning the pilot when a stall

Answer 12

Is imminent

Question 13

Which repair would require a landing gear retraction test?

Answer 13

Gear downlock microswitch.

Question 14

1) When an airplane is slowed below approximately 20 MPH, the antiskid system automatically deactivates to give the pilot full control of the brakes for maneuvering and parking.
2) An antiskid system consists basically of three components; wheel speed sensor, control box, and control valves.
Regarding the above statements,

Answer 14

Both no.1 and no.2 are true

Question 15

In the air with the antiskid armed, current cannot flow of the antiskid control box because the landing gear

Answer 15

Squat switch is open

Question 16

Antiskid braking systems are generally armed by

Answer 16

A switch in the cockpit.

Question 17

An antiskid system is

Answer 17

An electrohydraulic system.

Question 18

The angle-of-attack detector operates from differential pressure when the airstream

Answer 18

Is not parallel to the true angle of attack of the aircraft.

Question 19

An antiskid system is designed to

Answer 19

Sense the deceleration rate if every main landing gear wheel and release then reapply pressure at a slightly lower value when a skid is detected.

Question 20

In most hydraulically actuated landing gear systems, the order of gear and fairing door operation is controlled by

Answer 20

Sequence valves

Question 21

Which of the following functions does a skid control system perform?

1) Normal skid control
2) Normal braking
3) Fail safe protection
4) locked wheel skid control
5) Touchdown protecting
6) Takeoff protection

Answer 21

1,3,4,5

Question 22

What landing gear warning device(s) is/are incorporated on retractable landing gear aircraft?

Answer 22

A horn or other aural device and a red warning light.

Question 23

In an antiskid system, wheel skid is detected by

Answer 23

An electrical sensor

Question 24

In a brake antiskid system, when an approaching skid is sensed, an electrical signal is sent to the skid control valve which

Answer 24

Relieves the hydraulic pressure on the brake.

Question 25

Which of the following are some uses for a DC-selsyn system?

1) Indicates position of retractable landing gear.
2) indicates the angle of incidence of an aircraft.
3) Indicates the altitude of an aircraft.
4) Indicates cowl flaps or oil cooler door position.
5) Indicate fuel quantity
6) Indicates the rate of climb of an aircraft.
7) Indicates position of wing flaps.

Answer 25

1,4,5,7

Question 26

Landing gear warning systems usually provide which of the following indications?

Answer 26

Red light for unsafe gear; green light for gear down; no light for gear up.

Question 27

1) An airspeed indicator measures the differential between pitot and static air pressures surrounding the aircraft at any moment of flight.
2) An airspeed indicator measures the differential between pitot and cabin air pressures at any moment of flight.
Regarding the above statements,

Answer 27

Only no.1 is true.

Question 28

The basic difference between an autosyn and megnesyn indicating system is the

Answer 28

Rotor

Question 29

The rotor in a magnesyn remote indicating system uses

Answer 29

A permanent magnet

Question 30

At what point in the landing operation does normal skid control perform its function?

Answer 30

When wheel rotation deceleration indicates an impending skid.

Question 31

When an airplane’s primary flight control surfaces are set for a particular phase of flight, such as landing or takeoff, the corresponding control-surface indicating system will show

Answer 31

Trim position

Question 32

Microswitches are used primarily as limit switches to

Answer 32

Control electrical units automatically

Question 33

(Refer to Figure 20.) What will illuminate the amber indicator light?

Answer 33

Closing the nose, left and right wheel gear full retreat switches.

Question 34

(Refer to Figure 20.) What is the minimum circumstance that will cause the landing gear warning horn to indicate an unsafe condition?

Answer 34

Any gear not down and locked, and one throttle retarded.

Question 35

(Refer to Figure 19.) What is the indication of the red landing gear position to light under the following conditions?
Aircraft on jacks
Landing gear in transit
Warning horn sounding

Answer 35

Extinguished