Af A/c Instrument Systems

Front 1

a static check may be performed on Manifold pressure gauge by using what piece of information

Back 1

current atmospheric pressure

Front 2

What aircraft instrument can be used to check a manifold pressure gauge for proper indication

Back 2

the sensitive altimeter

Front 3

Name several of the indication errors that may be found in altimeters

Back 3

1. scale errors
2. hysteresis
3. friction
4. installation

Front 4

What type of temperature sensing system is normally used to measure a turbine engine exhaust gas temperature

Back 4

thermocouple-type system

Front 5

what is the signal source in an electical resistance type temperature indicating system?

Back 5

A temperature bulb OR sensing element

Front 6

what operating parameter is indicated by a tachometer?

Back 6

Engine RPM

Front 7

what is the name of the effect that causes a gyro to respond to an applied force at a point 90 degrees further in the direction of rotation?

Back 7

gyroscopic precession

Front 8

what are the 3 sources of power used to drive a gyroscopic turn indicator?

Back 8

1. air from a vacuum
2. air from a pressure source
3. electric motor

Front 9

what are 2 items that should be considered during inspection of a magnetic compass?

Back 9

1. the fluid must be clear
2. the housing must be full with no bubbles
3. the card must be legible
4. lubber line intact

Front 10

in what way do magnetic fields generated by electrical equipment and steel parts in the airplane affect a magnetic compass?

Back 10

Stray magnetic fields deflect the compass from correct alignment with the earths magnetic field

Front 11

describe the basic operating concept of a synchro-type remote indicating system.

Back 11

a remote transmitter electrically signals a receiver inside the instrument

Front 12

what aircraft instruments are connected to the pitot-static system?

Back 12

1. altimeter
2. vetical speed indicator
3. airspeed
4. mach meter in high-performance jets

Front 13

why should you avoid cleaning obstructions from the sensing holes in a pitot-static system with a tool?

Back 13

the holes are aerodynamically critical

Front 14

After components in a pitot-static system have been replaced, what test or inspections are required?

Back 14

the static system leak test specified by FAR 91.411

Front 15

what quantity is accurately measure by a capactiance-type fuel quantity indicating system?

Back 15

the MASS of the fuel

Front 16

who is authorized to apply the range markings to an instrument dial face?

Back 16

The manufacturer or a certified instrument repair station

Front 17

what is the purpose of a slippage mark on an instrument glass?

Back 17

to indiciate if the glass has moved, which would cause incorrect range markings on an instrument that has the range markings painted on the glass

Front 18

what references should be consulted to determine the proper range markings for aircraft instruments?

Back 18

1. the aircraft maintenance manual
2. aircraft flight manual
3. TCDS
4. Aircraft specifications

Front 19

what is the meaning of a yellow arc on an aircraft instrument?

Back 19

a caution or limited flight operations range

Front 20

what is the reason for "swinging" a compass and how is it accomplished?

Back 20

To compensate for deviations, caused by magnetic fields in the aircraft, by adjusting the compensating magnets

Front 21

What instrument indications will result if the static pressure line becomes disconnected inside the cabin of a pressurized aircraft

Back 21

The altimeter and airspeed indications will both be lower than normal and the vertical speed indicator will indicate a momentary descent and then return to zero

Front 22

What causes an electric driven Gyro rotor to tilt when the aircraft is turned

Back 22

Gyroscopic precession

Front 23

Where are instrument range marking placed

Back 23

They are applied to the outer edge of the coverglass or over the calibrations on the dial face of the instrument

Front 24

What other type mark is required when range markings are applied to the glass instrument cover

Back 24

An index mark which is a white line extended from the glass cover onto the instrument case to indicate slippage of the glass.

Front 25

What type of fuel quantity system is an electronic fuel measuring device that accurately determines the weight of the fuel in the tanks of an aircraft

Back 25

The capacitor type fuel quantity system

Front 26

When inspecting a magnetic compass the bowl should be filled with liquid and should not contain any bubbles or discoloration what is the purpose of the liquid in the bowl

Back 26

To dampen the oscillations of the float

Front 27

What is a synchro type remote indicating system

Back 27

An electrical system used for transmitting information from one point to another.
These systems can be used to show movement and position of landing gear, wing flaps, oil cooler doors or other movable parts of the aircraft.
The three most common synchro systems are the autosyn, the selsyn and the magnesyn

Front 28

What is used to check a manifold pressure gauge for correct indication when the engine is not operating

Back 28

Either a barometer or an altimeter after it has been set to zero